Code of Practice v3.0 Online
The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.
The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.
Policy for Updates to NZ Metal Roof and Wall Cladding Code Practice.
All revisions to clauses of the COP after June 2018 are recorded at 19 Revision History, including a brief explanation of the change.
See sub-clauses for detail of revisions at particular dates.
Revisions are split into 3 categories for simple assessment by users:
Category | Description | Notification |
Category 1 - Minor Errata | Correction to spelling, grammar or formatting that have no bearing on on the substance of the clause. | Recorded on website only - not individually included in emailed update |
Category 2 - Editing and rearrangement | A clause or section of clauses has been rewritten to some extent for better articulation of the existing recommendation. Existing citations of the COP in project documentation may be less clear as a result, but recommendations are not altered. | Recorded on website, and will be cited in emailed update as either specific or summary information as appropriate. |
Category 3 - Substantial change to recommendation | A substantial change in a specific recommendation of the COP has taken place. A review of existing project documentation against the new clause is considered essential. | Recorded on website, and explained with detail in emailed update |
In a major update, effective 1 November 2022, the Clause 15.5 – previously 'Insulated Panels' – has been revised and extended.
The main clause has been renamed 15.5 Warm Roofs, and it now includes sub-clauses dealing with 15.5.1 Insulated Panels 15.5.2 Composite Systems and 15.5.3 Spray-On Systems.
Other notable updates include:
The rest of the updates consist of minor edits for clarity and layout.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Updated Revisions Message |
2 - Editing and rearrangement | 3.8 | 3.8 Snow Loads | Table 3.8B Altitudes for Snow Loading Designn was renamed to remove ambiguity. |
1 - Minor Errata | 3.15 | 3.15 Profile Shape | Renamed Tray/Deck profiles to Standing Seam/Tray Profiles. |
1 - Minor Errata | 5.1 | 5.1 NZBC: Clause E1 — Surface Water | Expanded performance requirement in accordance with E1– Surface Water. |
3 - Substantial change to recommendation | 5.4.6 | 5.4.6 Asymmetrical Valleys | Changed recommendation in line with the most recent 5.4.7 Valley Capacity Calculator. |
2 - Editing and rearrangement | 10.1 | 10.10 Ventilation Pathways | Added fleece lined products. |
1 - Minor Errata | 12.1.1 | 12.1.1 Wind Noise | Added recommendation to reduce Underlay Flutter, by adding spray-on foam insulation. |
2 - Editing and rearrangement | 15.3.2 | 15.3.2 Valleys | Updated Reference to 5.4.7 Valley Capacity Calculator |
2 - Editing and rearrangement | 15.4.6 | 15.4.6 Standing Seam Ventilation | Replaced 15.4.6A Standing Seam Ventilation with better quality image. |
3 - Substantial change to recommendation | 15.4.7 | 15.4.7 Standing Seam Roofing Wind Loads | Change in recommendation. |
4 - Clause Inserted | 15.4.10.3 Standing Seam Flashing | Newly created clause. | |
3 - Substantial change to recommendation | 15.5 | 15.5 Warm Roofs | The main clause Insulated Panels have been renamed Warm Roofs. In addition to insulated panels, the clause also features composite roofs and spray-on systems. |
2 - Editing and rearrangement | 15.5.1 | 15.5.1.1 Insulated Panel Manufacturing | The clause Design under Insulated Panels has been comprehensively reviewed and edited. It is now called Insulated Panel manufacturing. The rest of the content is available in smaller sub-clauses throughout the new clause 15.5.1 Insulated Panels. |
4 - Clause Inserted | 15.5.1 Insulated Panels | Newly created clause for Insulated Panels. | |
4 - Clause Inserted | 15.5.1.2 Insulated Panel Composition | Newly created clause. | |
4 - Clause Inserted | 15.5.1.3 Insulated Panel Face Profiles | Newly created clause. | |
4 - Clause Inserted | 15.5.1.6 Insulation Panel Insulation Values | Newly created clause. | |
4 - Clause Inserted | 15.5.1.8 Natural Lighting for Insulated Panels | Newly created clause. | |
4 - Clause Inserted | 15.5.1.11 Insulated Panels Fitness for Purpose | Newly created clause. | |
4 - Clause Inserted | 15.5.1.12 Insulated Panel Installation | Newly created clause. | |
4 - Clause Inserted | 15.5.1.13 Insulated Panel Installation Safety | Newly created clause. | |
4 - Clause Inserted | 15.5.1.15 Insulated Panel Penetrations | Newly created clause. | |
4 - Clause Inserted | 15.5.1.17 Insulated Panel End Laps | Newly created clause. | |
2 - Editing and rearrangement | 15.5.2 | 15.5.1.4 Insulated Panel Face Materials | The clause has been comprehensively reviewed and edited. |
4 - Clause Inserted | 15.5.2 Composite Systems | Newly created clause. | |
4 - Clause Inserted | 15.5.2.1 Composite Systems Composistion | Newly created clause. | |
4 - Clause Inserted | 15.5.2.2 Composite System Installation | Newly created clause. | |
2 - Editing and rearrangement | 15.5.3 | 15.5.1.5 Insulated Panel Core Materials | The clause has been comprehensively reviewed and edited. |
4 - Clause Inserted | 15.5.3 Spray-On Systems | Newly created clause. | |
4 - Clause Inserted | 15.5.3.1 Ventilation of Spray-on Systems | Newly created clause. | |
2 - Editing and rearrangement | 15.5.4 | 15.5.1.7 Insulation Panel Structure | This clause has been comprehensively reviewed and edited. |
2 - Editing and rearrangement | 15.5.4.1 | 15.5.1.14 Insulated Panels Supporting Structure | The clause has been comprehensively reviewed and renamed. |
0 - Clause Removed | 15.5.5 | Thermal | Clause was removed during the revision of Insulated Panels. |
0 - Clause Removed | 15.5.5.1 | Fire | Clause was removed during a revision of Insulated Panels. |
2 - Editing and rearrangement | 15.5.6 | 15.5.1.10 Insulated Panels and Internal Moisture | This clause has been comprehensively reviewed and renamed. |
2 - Editing and rearrangement | 15.5.7 | 15.5.1.9 Insulated Panel Acoustics | This clause has been comprehensively reviewed and edited. |
3 - Substantial change to recommendation | 15.5.8 | 15.5.1.16 Fixing Insulated Panels | This clause has been comprehensively revised and renamed. |
2 - Editing and rearrangement | 15.5.9 | 15.5.1.18 Insulated Panel Flashings | This clause has been comprehensively revised and renamed. |
2 - Editing and rearrangement | 17.3 | 17.3 MRM Soft Edge Standard | Editing for clarity. |
4 - Clause Inserted | 19.1 2022 – November | Revision summary for the November 2022 update. |
The following revisions to the NZ Metal Roof and Wall Cladding Code of Practice were published on 1 June 2022.
Revised clauses:
Clause 15.4 Standing Seam Cladding and all its sub-clauses were comprehensively revised for this update.
Change in recommendation:
The rest of the updates consisted of minor changes, grammar fixes, and minor edits to improve clarity.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
3 - Substantial change to recommendation | 3.2 | 3.20 Aluminium Fastening Pattern Tables | Corrected minimum depth of corrugated aluminium to 17 mm instead of 27 mm. Added H36 to the headings for correct identification and product selection. |
3 - Substantial change to recommendation | 7.1.1 | 7.1.1 Minimum Roof Cladding Pitch | Added corrugated profiles with a height of more than 35 mm to 7.1.1A Minimum Recommended Pitch. |
3 - Substantial change to recommendation | 8.3 | 8.3 Flashing Cover | Increased recommended cover for 8.3E Barge Flashing Cover — Trapezoidal and Secret Fixed and 8.3G Barge Flashing Cover — Corrugate Category C from 50 mm to 75 mm. |
3 - Substantial change to recommendation | 15.4 | 15.4 Standing Seam Cladding | The entire clause 15.4 Standing Seam Cladding, including all sub-clauses, had been revised. |
3 - Substantial change to recommendation | 15.4.3 | 15.4.1 Standing Seam Materials | This sub-clause has been entirely revised as part of the revision of the main clause 15.4 Standing Seam Cladding. |
4 - Clause Inserted | 15.4.2 Standing Seam Profiles | New clause, inserted as part of a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.3 Standing Seam Fixings | New clause, inserted as part of a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.4 Standing Seam End Laps | New clause, added as part of the comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.5 Sarking | New clause, introduced as part of a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.6 Standing Seam Ventilation | New clause, introduced during a comprehensive review of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.7 Standing Seam Roofing Wind Loads | New clause, introduced during comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.8 Penetrations on Standing Seam Cladding | New clause, introduced during a comprehensive review of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.9 Canning and Purlin Creasing | New clause, introduced as part of a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.10 Installing Standing Seam Cladding | New clause, introduced as part of a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.10.1 Standing Seam Cladding Set Out | New clause, introduced a during a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 15.4.10.2 Provision for Expansion — Standing Seam Cladding | New clause, introduced during a comprehensive revision of 15.4 Standing Seam Cladding. | |
4 - Clause Inserted | 19.1 | 19.2 2022 – June | Revision message June – 2022. |
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
2 - Editing and rearrangement | 3.18 | 3.18 G550 Steel Cladding Fastening Pattern Tables | Edited table headings for improved readability. Inserted a table explaining wind speed as per NZS 3604. |
1 - Minor Errata | 9.4.2.3 | 9.4.2.3 Cricket Back Curbs | Grammar fix. Rewrote the last sentence. |
1 - Minor Errata | 17.1.2.2.3 | 17.1.2.2.3 Number of Spans | Clarification. |
0 - Clause Removed | 15.4.1 | Self-Supporting Cladding | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. The subject is now discussed through various new sub-clauses. |
0 - Clause Removed | 15.4.2 | Fully Supported Roof And Wall Cladding | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. For information about the subject, see 15.4.5 Sarking. |
0 - Clause Removed | 15.4.2.1 | Types | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.2 | Traditional Architectural Metal Panels | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.3 | Long Length Strip Roof Cladding | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.4 | Types Of Joints | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.5 | Standing Seam | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.6 | Angled Seam | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.7 | Roll Cap | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.2.8 | Transverse Laps | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.3.1 | Copper | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. For information about this material, see 4.16.5 Copper. |
0 - Clause Removed | 15.4.3.2 | Zinc | Clause removed as part of the complete revision of 15.4 Standing Seam Cladding. For information about this material see 4.16.4 Zinc. |
0 - Clause Removed | 15.4.3.3 | Aluminium | Clause removed as part of the complete revision of 15.4 Standing Seam Cladding. For information about this material see 4.16.3 Aluminium. |
0 - Clause Removed | 15.4.3.4 | Stainless Steel | Clause removed as part of the complete revision of 15.4 Standing Seam Cladding. Information about this material can be found at 4.16.2 Stainless Steel. |
0 - Clause Removed | 15.4.3.5 | Coated Steel | Clause removed as part of the revision of 15.4 Standing Seam Cladding, information about this product is still available in 4.16.1 Steel. |
0 - Clause Removed | 15.4.4 | Loadings | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.4.1 | Fixing | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.4.2 | Substrate | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.4.3 | Fasteners | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.5 | Underlay | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. Information about underlay can be found in 10.11 Underlay. |
0 - Clause Removed | 15.4.6 | Ventilation | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. The subject is now discussed in 15.4.6 Standing Seam Ventilation. |
0 - Clause Removed | 15.4.7 | Drainage | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. For information about drainage, see 5 Roof Drainage . |
0 - Clause Removed | 15.4.7.1 | Valleys | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.8 | Facade Cladding | This clause was removed during a comprehensive revision of 15.4 Standing Seam Cladding. The subject is now discussed through various other sub-clauses. |
0 - Clause Removed | 15.4.9 | Edge Finishes | This clause was removed during a comprehensive revision of 15.4 Standing Seam Cladding, please see the new sub-clause 15.4.4 Standing Seam End Laps. |
0 - Clause Removed | 15.4.9.1 | Ridge And Hip | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.9.2 | Apron Or Abutment | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.9.3 | Eaves And Verge | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.9.4 | Penetrations | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.9.5 | Cappings | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.10 | Durability | Clause removed during a comprehensive revision of 15.4 Standing Seam Cladding. For durability issues, see 15.4.10 Durability. |
0 - Clause Removed | 15.4.10.1 | Patina Formation | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.10.2 | Copper Patination | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
0 - Clause Removed | 15.4.10.3 | Zinc Patination | Clause removed as part of the overall revision of 15.4 Standing Seam Cladding. |
The following revisions to the NZ Metal Roof and Wall Cladding Code of Practice were published on 1 April 2022.
Change in recommendation:
4.9.1 Dissimilar Metals: Gutters and spouting made from materials which are incompatible with the roof cladding to include special provisions such as a gap between spouting and fascia, using leaf deflectors, and considering low fronted spouting.
Revised clauses:
The rest of the updates consisted of minor changes, editing, and new drawings for 14 Installation, without any changes in recommendations.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
3 - Substantial change to recommendation | 4.9.1, 4.10.1 | 4.9.1 Dissimilar Metals | Change of recommendation for spouting and roof cladding made from incompatible material. |
3 - Substantial change to recommendation | 8.3 | 8.3 Flashing Cover | Clause has been completely revised. |
3 - Substantial change to recommendation | 10.1 | 10.10 Ventilation Pathways | Clause revised for clarity. |
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
1 - Minor Errata | 2.1, 2.1 | 2.1 Definitions | Added defintion for SED Wind Zone. |
2 - Editing and rearrangement | 3.15, 3.13 | 3.15 Profile Shape | Inserted new Drawing: Profile Types – |
2 - Editing and rearrangement | 5.3.7 | 5.3.7 Gutter Capacity Calculator | Enabled Profile Description Field to describe product. |
1 - Minor Errata | 5.4.7 | 5.4.7 Valley Capacity Calculator | Standardise internal structure - no user facing or operational changes. |
1 - Minor Errata | 5.6.3 | 5.6.3 Downpipe Capacity Calculator | Standardise internal structure - no user facing or operational changes. |
2 - Editing and rearrangement | 5.7.1 | 5.7.1 Maximum Area Above Spreader Calculator | Enabled Profile Description Field to describe product. |
2 - Editing and rearrangement | 7.1.4 | 7.1.4 Maximum Run Calculator | Enabled Profile Description Field to describe product. |
2 - Editing and rearrangement | 8.3.2 | 8.2.1 Flashing Edges | Copy moved from 8.3 Flashing Cover to this clause. |
4 - Clause Inserted | 8.3.1 Apron Upstands | New clause created from 8.3 Flashing Cover. | |
4 - Clause Inserted | 8.3.2 Clearances | New clause created from 8.3 Flashing Cover. | |
4 - Clause Inserted | 8.3.3 Ridging and Other Transverse Flashings | New clause created from 8.3 Flashing Cover. | |
1 - Minor Errata | 8.4.4.4 | 8.4.4.4 Eaves Flashing | Corrected reference typo E1/AS1 to E2/AS1. |
2 - Editing and rearrangement | 9.4.4 | 9.4.4 Maximum Area Above Penetration Calculator | Enabled Profile Description Field to describe product. |
1 - Minor Errata | 10.10.1.2 | 10.10.1.2 Fascia Vents | Grammar fix. |
4 - Clause Inserted | 10.10.1.4 Vented Soft Edge | New clause. | |
2 - Editing and rearrangement | 10.10.1 | 10.10.1 Methods of Ventilation | Clause renamed. |
1 - Minor Errata | 10.10.2 | 10.10.2 Battens | Grammatical fix for clarity. |
4 - Clause Inserted | 10.10.3 Applied Fleeces | New Clause. | |
2 - Editing and rearrangement | 14.13.2 | 14.13.2 Screws | Updated drawings: 14.13.2D Screw Gauge and 14.13.2E Threads per Inch (TPI). |
2 - Editing and rearrangement | 14.16 | 14.16 Stop-ends | Drawings updated: 14.16A Dog-eared Stop-ends, 14.16B Pull-up Stopends, and 14.16C Corrugate Stop-ends. |
2 - Editing and rearrangement | 14.17 | 14.17 Turndowns (Drip Forming or Drip Edging) | UPdated drawing: 14.17A Profile Turndown |
2 - Editing and rearrangement | 14.19.1 | 14.19.1 Roof Cladding Damage | Drawing updated: 14.19.1A Sealed and Riveted Saddle |
2 - Editing and rearrangement | 14.3.1 | 14.3.1 Unloading | Drawing updated: 14.3.1A Sling with Spreader Bar. |
2 - Editing and rearrangement | 14.6 | 14.6 Walking On Roofs | Drawings updated: 14.6A Walking in the Pan and 14.6B Spreading Weight over two Ribs. |
4 - Clause Inserted | 19.3 2022 – April | Revision message – April 2022. | |
The following revisions to the NZ Metal Roof and Wall Cladding Code of Practice were published on 1 December 2021.
Summary of Changes in this update:
The rest of this update comprises minor edits and fixes.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
3 - Substantial change to recommendation | 3.17.1 | 3.17.1 Corrugated Steel – 0.40 | Drawing edited to change C2 recommendation to stay below Very High. |
3 - Substantial change to recommendation | 3.17.2 | 3.17.2 Corrugated Steel – 0.55 | Changed recommendation for C2, to only be used below Very High Wind Zones. |
3 - Substantial change to recommendation | 4.10.3 | 4.10.3 Solar Collectors and Other Roof Mounted Structures | Clause has been completely revised. |
3 - Substantial change to recommendation | 8.8 | 8.8 Flashing Buckling | Changed recommended minimum moisture content to 12% following advice from Scion . |
3 - Substantial change to recommendation | 12.1 | 12.1 Roof Noise | This clause has been substatially revised. Some-subsections have been promoted to headings and some had been deleted a part of the revision. |
4 - Clause Inserted | 12.1.1 Wind Noise | New clause, raised and revised from former sub-sub clause of Roof Noise. | |
4 - Clause Inserted | 12.1.2 Precipitation Noise | Newly created clause from the revised Roof Noise. | |
4 - Clause Inserted | 12.1.3 Thermal Noise | New clause, information elevated from the revised Roof Noise. | |
4 - Clause Inserted | 19.4 2021 – December | Revision message for the 1 December 2021 Update. | |
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
2 - Editing and rearrangement | 5.3.7 | 5.3.7 Gutter Capacity Calculator | All calculators now require input of both 50 year and 10 year ARI. |
2 - Editing and rearrangement | 5.4.7 | 5.4.7 Valley Capacity Calculator | All calculators now require input of both 50 year and 10 year ARI. |
2 - Editing and rearrangement | 5.6.3 | 5.6.3 Downpipe Capacity Calculator | All calculators now require input of both 50 year and 10 year ARI. |
2 - Editing and rearrangement | 5.7.1 | 5.7.1 Maximum Area Above Spreader Calculator | All calculators now require input of both 50 year and 10 year ARI. |
2 - Editing and rearrangement | 7.1.4 | 7.1.4 Maximum Run Calculator | All calculators now require input of both 50 year and 10 year ARI. |
2 - Editing and rearrangement | 9.4.4 | 9.4.4 Maximum Area Above Penetration Calculator | All calculators now require input of both 50 year and 10 year ARI. |
1 - Minor Errata | 1.3 | 1.3 Standards and Related Documents | Fixed column spacing. |
1 - Minor Errata | 2.1 | 2.1 Definitions | Clarified definitions for tray, trough, standing seam, and secret fixed profiles. |
1 - Minor Errata | 3.6.2 | 3.6.2 Roof Traffic | Changed "trademan" to trades people for gender neutrality. |
1 - Minor Errata | 3.18 | 3.18 G550 Steel Cladding Fastening Pattern Tables | Fixed grammar for consistency. Fixed drawings to show C2 fastening pattern. |
2 - Editing and rearrangement | 4.6.2 | 4.6.2 Environmental Guides | Envrinmental guides redone for improved display on all browers. |
1 - Minor Errata | 15.1 | 15.1 Curved Roofs | Grammar fix. |
1 - Minor Errata | 16.8 | 16.8 Overpainting | slight formatting change for improved reading. |
The following revisions to the NZ Metal Roof and Wall Cladding Code of Practice were published on 1 September 2021.
Summary of Changes in this update:
The rest of this update consisted of fixing minor errors.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 Introduction | Update Revisions Message | |
4 - Clause Inserted | 3.18 G550 Steel Cladding Fastening Pattern Tables | New clause aimed at easy reference of fastening patterns. | |
4 - Clause Inserted | 3.20 Aluminium Fastening Pattern Tables | New clause for easy referencing of fastening patterns for aluminium cladding. | |
1 - Minor Errata | 3.6.2 Roof Traffic | Changed "tradesman" to trades people for gender neutrality. | |
1 - Minor Errata | 3.6.3 Uniformly Distributed Load (Wind or Induced Action) | Corrected spelling of "Uniformly. Included a full term before the abbreviation for UDL in the first sentence. | |
2 - Editing and rearrangement | 5.3.3 Internal Corners | Clause moved from Valleys to Gutters. | |
3 - Substantial change to recommendation | 5.3.7 Gutter Capacity Calculator | The minimum Freeboard on internal gutter calculations has been changed to 30mm to align with E1/AS1 and E1/AS2. | |
1 - Minor Errata | 5.4.2 Valley Design | Inserted cross-reference link to Internal Corners. | |
4 - Clause Inserted | 5.4.4 Intersecting Valleys | New clause showing the correct way to intersect valleys. | |
2 - Editing and rearrangement | 5.7 Downpipe Spreaders | Replaced Downpipe Spreader Design-drawing with a more detailed one. | |
3 - Substantial change to recommendation | 9.1 Penetrations Minimum Pitch | Revised first sentence to make allowance for modern profiles and proprietary profiles. | |
4 - Clause Inserted | 14.8 Double Lapping | New clause. | |
4 - Clause Inserted | 19.5 2021 – September | New Revision clause |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 June 2021.
COP Clauses 11 Natural Light and 14 Installation were comprehensively reviewed and revised for this update. Users are advised to reread those clauses for the most up-to-date information and recommendations.
Other updates included minor fixes to grammar, layout, and updated drawings and dividing 4.9.4 Compatibility Table into smaller, more usable clauses (with no change to recommendations).
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
1 - Minor Errata | 3.5.2 | 3.5.2 Wind Load | Some rewording for clarity. |
1 - Minor Errata | 4.10.1 | 4.9.1 Dissimilar Metals | Editing for clarity. |
2 - Editing and rearrangement | 4.10.3 | 4.9.4 Compatibility Table | The clause was split for ease of use. |
3 - Substantial change to recommendation | 5.2.2.2 | 5.2.2.2 Allowance for Short-Term Intensities | Updated Short-term Intensity Factor Explanation. |
1 - Minor Errata | 5.4.2 | 5.4.2 Valley Design | UPdated link to the Valley Capacity Calculator. |
2 - Editing and rearrangement | 8.4.4.4 | 8.4.4.4 Eaves Flashing | Inserted a paragraph recommending eaves flashings in Marine Environments. |
2 - Editing and rearrangement | 10.9 | 10.9 Minimising Ingress of Water Vapour into the Ceiling Cavity | Clause renamed and revised for clarity. |
3 - Substantial change to recommendation | 11 | 11 Natural Light | COP Clause 11. Natural Light has been completely revised. |
3 - Substantial change to recommendation | 11.1 | 11.1 Clause G7 NZBC | COP Clause 11. Natural Light has been entrile revised. |
3 - Substantial change to recommendation | 11.2 | 11.2 Natural Light Materials | COP clause 11. Natural Light has been revised, which includes the clause previously titled "Materials". |
0 - Clause Removed | 11.3 | Types Of Roof Lights | This clause was removed as part of an overall revision of COP clause 11. Natural Light. Illustration of different rooflights can be found in Thermal Expansion and |
3 - Substantial change to recommendation | 11.4 | 11.5 Light Transmission | Clause has been revised as part of an overall revision of COP Clause 11. Natural Light. |
0 - Clause Removed | 11.5 | Weathering And Durability | This clause has been removed as part of an overall revision of COP Clause 11. Natural Light. Information about translucent sheeting durability can now be found at Natural Light Performance - Durability, |
3 - Substantial change to recommendation | 11.6 | 11.3 Performance – Structure | Clause renamed and content added. |
2 - Editing and rearrangement | 11.6.1 | 11.3.1 Point Load on Translucent Sheets | Clause revised and renamed as part of the overall revision of COP Clause 11. Natural Light. |
2 - Editing and rearrangement | 11.6.2 | 11.3.2 Distributed Loads on Translucent Sheeting | Clause revised and renamed as part of the overall revision of COP Clause 11. Natural Light. |
3 - Substantial change to recommendation | 11.7 | 11.4 Thermal Resistance | Clause has been revised as part of an overall revision of COP Clause 11. Natural Light. |
3 - Substantial change to recommendation | 14 | 14 Installation | COP Clause 14. Installation has been significantly reviewed and revised. |
1 - Minor Errata | 14.1 | 14.11 Overhang | Drawing tidy up. |
3 - Substantial change to recommendation | 14.1 | 14.1 Pre- Installation | This clause has been revised as part of an overall revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.2.2 | 14.2.2 Ordering | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.2.3 | 14.2.3 Transportation | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.3 | 14.3 Accepting Delivery | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.3.1 | 14.3.1 Unloading | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.3.2 | 14.3.2 Wet Storage Damage | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.6 | 14.6 Walking On Roofs | This clause has been reviewed as part of a substantial overall revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.6.1 | 14.6.1 Footwear | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.7 | 14.7 Strippable Films | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
4 - Clause Inserted | 14.7.1 | 14.7.1 Storing Product with Strippable Film | This clause has been removed as part of a substantial revision of COP Clause 14. Installation. For handling and storage of products with strippable film, please see Strippable Films. |
0 - Clause Removed | 14.7.2 | Using Strippable Film | This clause has been removed as part of a substantial revision of COP Clause 14. Installation. For using and handling products with strippable film, please see Strippable Films. |
1 - Minor Errata | 14.9 | 14.10 Marking and Cutting | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
2 - Editing and rearrangement | 14.12.2 | 14.13.2 Screws | Added "Reduced Diameter Drill Point" to Screw Points. This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
1 - Minor Errata | 14.12.3 | 14.13.3 Clip Fasteners | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.12.4 | 14.13.4 Rivets | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
1 - Minor Errata | 14.13 | 14.14 Fastener Installation | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
4 - Clause Inserted | 14.15 | 14.16 Stop-ends | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
1 - Minor Errata | 14.16 | 14.17 Turndowns (Drip Forming or Drip Edging) | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
1 - Minor Errata | 14.18 | 14.19 Avoiding Problems | This clause has been renamed as part of an overall revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.18.1 | 14.19.1 Roof Cladding Damage | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.18.2 | 14.19.2 Water Ponding | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.18.3 | 14.19.3 Correctly Installed Gutters | This clause has been reviewed as part of a substantial revision of COP Clause . |
3 - Substantial change to recommendation | 14.18.4 | 14.19.4 Swarf Damage | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
0 - Clause Removed | 14.18.4.1 | Identifying Swarf Stains | This clause has been removed as part of a substantial revision of COP Clause 14. Installation. |
3 - Substantial change to recommendation | 14.18.4.2 | 14.19.4.1 Preventing Swarf Damage | This clause has been reviewed as part of a substantial revision of COP Clause 14. Installation. |
0 - Clause Removed | 14.18.4.3 | Swarf Effect on Performance | This clause has been reviewed as part of an overall revision of COP Clause 14. Installation. For more information about swarf effects, please read Swarf Staining and Cut Edge Corrosion. |
0 - Clause Removed | 14.18.4.4 | Repairing Swarf Damage | This clause has been reviewed as part of an overall revision of COP Clause 14. Installation. For more information about dealing with swarf, see Swarf Damage. |
2 - Editing and rearrangement | 14.18.5 | 14.19.5 Colour Matching Paint | Inserted picture. This clause has been reviewed as part of an overall revision of COP Clause 14. Installation. |
2 - Editing and rearrangement | 14.18.7 | 14.19.7 Sunscreen | Inserted photo of sunscreen damage. This clause has been reviewed as part of an overall revision of COP Clause 14. Installation. |
0 - Clause Removed | 14.18.8 | Removing Lichen | This clause has been removed as part of an overall revision of COP Clause 14. Installation. For information about Lichen, see Lichen. |
0 - Clause Removed | 14.18.9 | Gutter Installation | This clause has been removed as part of an overall revision of COP Clause 14. Installation. For Information about gutters, see Gutters. |
1 - Minor Errata | 14.19 | 14.20 Fixing Aluminium Sheeting | Grammar fix. This clause has been reviewed as part of an overall revision of COP Clause 14. Installation. |
1 - Minor Errata | 14.19.2 | 14.20.2 Recommendations for Fixing Aluminium | Fixed a link. |
4 - Clause Inserted | 11.8 Flatsheet Rooflights | New clause created as part of an overall revision of COP Clause 11. Natural Light. | |
4 - Clause Inserted | 14.12.2 Side Laps | New clause created as part of a substantial revision of COP Clause 14. Installation. | |
4 - Clause Inserted | 11.7 Stand-Alone Rooflights | New clause created as part of an overall revision of COP Clause 11. Natural Light. | |
4 - Clause Inserted | 11.6 Installing Translucent Sheets | New clause under COP Clause 11. Natural Light. | |
4 - Clause Inserted | Natural Light Performance - Durability | New clause. | |
4 - Clause Inserted | 11.1.1 Compliance | New clause dealing with natural light and compliance to NZBC G7. | |
4 - Clause Inserted | 19.6 2021 – June | Revision message for the update on 1 June 2021. |
The addition of an interactive calculator for asymmetrical valleys constitutes the most important inclusion in this update.
The other capacity calculators have all been refined and positioned for improved usability.
Gutter Capacity | 5.3.7 Gutter Capacity Calculator |
Valley Capacity (both symmetrical and asymmetrical) | 5.4.7 Valley Capacity Calculator |
Downpipe Capacity | 5.6.3 Downpipe Capacity Calculator |
Maximum Area Above Spreaders | 5.7.1 Maximum Area Above Spreader Calculator |
Maximum Area Above Penetrations | 9.4.4 Maximum Area Above Penetration Calculator |
Maximum Run | 7.1.4 Maximum Run Calculator |
In addition, various drawings have been updated for accuracy and correctness.
The rest of this update consisted of fixing minor errors and improvements for clarity.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
1 - Minor Errata | 2.1 | 2.1 Definitions | Added definitions for Translucent, Transparent, Opalescent, and Opaque. |
1 - Minor Errata | 3.13 | 3.13 Material Grade | Minor revision for Aluminium. |
0 - Clause Removed | 4.8 | Biological Corrosion | Clause removed. 4.8.4 Lichen is now in 4.8 Paint Durability, and 4.10.9 Gutter Leaf Guard is now in 4.10 Other Causes of Corrosion. |
2 - Editing and rearrangement | 5.3.7 | 5.4.7 Valley Capacity Calculator | Updated calculator to support Asymmetrical Valley calculations, including dynamic illustration. |
2 - Editing and rearrangement | 5.5.2 | 5.7.1 Maximum Area Above Spreader Calculator | Clause edited, new clause (Downpipe Spreaders) introduced with explanatory text about spreaders. Trapezoidal illustration updated to show effective pan-depth area. |
2 - Editing and rearrangement | 5.6 | 5.3.2 Gutter Capacity Design | Clause renamed and moved to Types of Gutter. |
1 - Minor Errata | 5.6.2 | 5.3.2.3 Gutter Support Systems | Clause moved to Gutter Installation and Maintenance. |
2 - Editing and rearrangement | 5.6.3 | 14.18.9 Gutter Installation | Clause renamed and moved to Pre-empting Problems. |
2 - Editing and rearrangement | 5.7.1 | 5.7 Downpipe Spreaders | Previously removed clause, now reinstated and updated to align with the new Maximum Area Above Spreader Calculator. |
1 - Minor Errata | 5.7.2 | 5.3.2.1 Gutter Fall | Clause moved to Gutter Installation and Maintenance. |
2 - Editing and rearrangement | 5.7.5 | 5.6.3 Downpipe Capacity Calculator | Illustration updated to show effective head. |
2 - Editing and rearrangement | 5.8 | 5.3.7 Gutter Capacity Calculator | Rectangular Gutter illustration updated to show effective gutter area. Clause renamed to refine search results. |
0 - Clause Removed | 6.2 | Acceptable Solution NZBC E2/AS1 | Clause removed as it pertains to E2, which is discussed in NZBC Clause E2 External Moisture (Extract). |
2 - Editing and rearrangement | 6.2.1 | 6.2 Compliance | Clause promoted, replacing ES/AS1 at postion 6.2, and content of clause reviewed. |
2 - Editing and rearrangement | 7.1.4 | 7.1.4 Maximum Run Calculator | Trapezoidal illustration updated to show effective pan-depth area. |
2 - Editing and rearrangement | 7.4 | 7.4 End Laps | Drawing deleted, replaced with a reference to 14.12.1 Sealing End Laps. |
2 - Editing and rearrangement | 8.7 | 8.7 Profile Closures | Clause revised. Recommendations have not changed. Drawings replaced with more accurate depictions. |
2 - Editing and rearrangement | 9.4.4 | 9.4.4 Maximum Area Above Penetration Calculator | Trapezoidal illustration updated to show effective pan-depth area. |
2 - Editing and rearrangement | 14.11.1 | 14.12.1 Sealing End Laps | Drawing replaced with with more accurate depiction of correctly and incorrectly sealed end laps. |
1 - Minor Errata | 15.4.4.2 | 15.4.4.2 Substrate | Removed empty link. |
4 - Clause Inserted | 19.7 2021 – March | New Revision clause. |
The following revisions to the NZ Metal Roof and Wall Cladding Code of Practice were published on 1 December 2020.
Summary of Changes in this update:
We introduced three more responsive tools to aid in roof drainage design. They are:
The rest of this update consisted of fixing minor errors and improvements for clarity.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
1 - Minor Errata | 1.3 | 1.3 Standards and Related Documents | Clause renamed. |
1 - Minor Errata | 4.10.1 | 4.9.1 Dissimilar Metals | Formatting fix. |
1 - Minor Errata | 4.10.3 | 4.9.4 Compatibility Table | Removed reference to Butly Rubber into its own clause 4.9.3 Compatibility with Non-Metallic Substances. |
2 - Editing and rearrangement | 4.12 | 4.11 Inert Catchment | Inserted photo "Localised Damage due to Inert Catchment". |
1 - Minor Errata | 5.2.4.6 | 5.4.6 Asymmetrical Valleys | Punctuation fix. |
2 - Editing and rearrangement | 5.2.5 | 7.1.3 Roof Drainage Capacity | Clause renamed to more accurately reflect its content. |
4 - Clause Inserted | 5.4.3 | 5.7.1 Maximum Area Above Spreader Calculator | New online tool for calculating maximum drainage areas for spreaders. |
1 - Minor Errata | 5.5 | 5.3.2 Gutter Capacity Design | Grammar fix. |
2 - Editing and rearrangement | 5.6.3 | 5.2.2 Rainfall Intensity | Rainfall intensity maps have been added to this clause. Links to rainfall maps have been included in the calculators. |
1 - Minor Errata | 5.6.3.2 | 5.2.2.2 Allowance for Short-Term Intensities | Updated short-term intensity multiplication factors. |
2 - Editing and rearrangement | 5.7 | 5.3.7 Gutter Capacity Calculator | Renamed the clause. Other capacity calculators have been moved closer to the relevant information dealing with each topic. |
0 - Clause Removed | 5.7.1 | North Island 50-year ARI, 10-minute Rainfall Intensity Map | Map moved to 5.2.2 Rainfall Intensity. |
0 - Clause Removed | 5.7.2 | South Island 50-year ARI, 10-minute Rainfall Intensity Map | Map moved to 5.2.2 Rainfall Intensity. |
3 - Substantial change to recommendation | 7.1.2 | 7.1.2 Runoff | Clause completely revised. |
4 - Clause Inserted | 7.1.3 | 7.1.4 Maximum Run Calculator | New online tool to calculate maximum run for drainage of different roofing profiles. |
2 - Editing and rearrangement | 8.4.4.4 | 8.4.4.4 Eaves Flashing | Inserted a paragraph recommending eaves flashings in Marine Environments. |
1 - Minor Errata | 9.4.2 | 9.4.2 Curb Design | Introductory copy added. |
4 - Clause Inserted | 9.4.4 | 9.4.4 Maximum Area Above Penetration Calculator | New online tool for calculating the maximum area above a penetration. |
1 - Minor Errata | 17.2.3.1 | 17.2.3.1 Site Testing | Updated the graph. |
4 - Clause Inserted | 4.9.3 Compatibility with Non-Metallic Substances | A new clause, previously part of "4.10.3 Compatibility Table". Information was split since this is not part of the table or online tool. | |
4 - Clause Inserted | 5.4.7 Valley Capacity Calculator | New clause created for Valley Capacity Calculator. The calculator was previously part of Capacity Calculators. | |
4 - Clause Inserted | 5.6.3 Downpipe Capacity Calculator | New clause for Downpipe Capacity Calculators. | |
4 - Clause Inserted | 19.8 2020 – December | New clause showing updates effective on 1 December 2020. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP) were published on 1 September 2020.
Summary of Changes in this update:
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
2 - Editing and rearrangement | 2.1 | 2.1 Definitions | Revised definitions of Gutter and Valley. |
2 - Editing and rearrangement | 4.2 | 4.2 Metal Corrosion | Added paragraph about salt contamination. |
1 - Minor Errata | 5.7 | 5.3.7 Gutter Capacity Calculator | Clarity improvement. Inserted the Comment: "Please read with Roof Drainage Design " |
1 - Minor Errata | 9.3 | 9.3 Penetration Durability and Compatibility | Renamed clause to be more reflective of its content. |
1 - Minor Errata | 12.4.1 | 12.4.1 Touch-Up | Changed punctuation in heading for consistency. |
2 - Editing and rearrangement | 15.2 | 15.2 Mounting Air Conditioning, Aerials, and Solar Units | Clause has been renamed and new copy included. |
2 - Editing and rearrangement | 17 | 17 Testing and MRM Standards | Added introduction. |
1 - Minor Errata | 18.6 | 18.6 Velocities | Removed extra heading. |
1 - Minor Errata | 18.7 | 18.7 Cricket Penetration Patterns | Fixed headings. |
4 - Clause Inserted | 17.4 MRM Pre-Painted Coil Standard – Performance Requirements | New clause. | |
4 - Clause Inserted | 17.4.1 Part1: ASNZS/2728:2013 | New clause. | |
4 - Clause Inserted | 17.4.2 Part 2: Additional Criteria | New clause. | |
4 - Clause Inserted | 17.4.3 Commentary | New clause. | |
4 - Clause Inserted | 17.4.4 Appendices of AS/NZS 2728:2013 included as Normative in the MRM Standard | New clause. | |
4 - Clause Inserted | 17.4.5 Appendices of AS/NZS2728:2013 considered Informative in the MRM Standard: | New clause. | |
4 - Clause Inserted | 17.4.6 Copyright Acknowledgement | New clause. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 June 2020.
New clauses:
The rest of this update consists of minor improvements, such as tidying up drawings and edits for clarity and grammar.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
2 - Editing and rearrangement | 3.16.4 | 3.16.4 Fastener Patterns | Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5 | 3.17 Steel Cladding Wind Load Span Graphs | Clause renamed. |
2 - Editing and rearrangement | 3.16.5.1 | 3.17.1 Corrugated Steel – 0.40 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5.3 | 3.17.2 Corrugated Steel – 0.55 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5.2 | 3.17.3 Trapezoidal Five Rib Steel – 0.40 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5.4 | 3.17.4 Trapezoidal Five Rib Steel – 0.55 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5.5 | 3.17.5 Trapezoidal Six Rib Steel – 0.40 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
2 - Editing and rearrangement | 3.16.5.6 | 3.17.6 Trapezoidal Six Rib Steel – 0.55 | Clause renamed and Fastener pattern illustrations updated for clarity - no change to intent. |
4 - Clause Inserted | 3.19 Aluminium Cladding Wind Load Span Graphs | New clause. | |
4 - Clause Inserted | 3.19.1 Corrugated Aluminium – 0.70 | New Clause for Aluminium Cladding Wind Load Span Graphs. | |
4 - Clause Inserted | 3.19.2 Corrugated Aluminium – 0.90 | New Clause for Aluminium Cladding Wind Load Span Graphs. | |
4 - Clause Inserted | 3.19.3 Trapezoidal Five Rib Aluminium – 0.70 | New Clause for Aluminium Cladding Wind Load Span Graphs. | |
4 - Clause Inserted | 3.19.4 Trapezoidal Five Rib Aluminium – 0.90 | New Clause for Aluminium Cladding Wind Load Span Graphs. | |
3 - Substantial change to recommendation | 5.6.3 | 5.2.2 Rainfall Intensity | Clause had been completely revised, with updated Rainfall Intensity Maps at the end of the main Clause, Roof Drainage. |
1 - Minor Errata | 5.6.3.1 | 5.2.2.1 Duration | Replaced comparison chart with a simplified one. |
2 - Editing and rearrangement | 8.3 | 8.3 Flashing Cover | Added minimum flashing cover values for change of pitch junctions. |
4 - Clause Inserted | 17 Testing and MRM Standards | New clause. | |
2 - Editing and rearrangement | 17 | 17.1 Metal Cladding Testing | Clause renamed. |
1 - Minor Errata | 17.5.1 | 17.1.5.1 Allowance for Variation | Fixed "overall" to "over all" |
4 - Clause Inserted | 17.2 MRM Fastener Performance Requirements and Testing | New clause. | |
4 - Clause Inserted | 17.2.1 Requirements for Fastener Testing | New clause. | |
4 - Clause Inserted | 17.2.2 Test Panel Requirements | New Clause. | |
4 - Clause Inserted | 17.2.2.1 Test Location | New Clause. | |
4 - Clause Inserted | 17.2.2.2 Site Orientation | New Clause. | |
4 - Clause Inserted | 17.2.2.3 Preparation of Test Panel | New Clause. | |
4 - Clause Inserted | 17.2.3 Fastener Performance Testing | New Clause. | |
4 - Clause Inserted | 17.2.3.1 Site Testing | New clause. | |
4 - Clause Inserted | 17.2.3.2 Field Performance Validation | New clause. | |
4 - Clause Inserted | 17.2.3.3 Accelerated Testing | New clause. | |
4 - Clause Inserted | 17.2.3.4 Fastener Shanks | New clause. | |
4 - Clause Inserted | 17.2.3.5 Sealing Washer Conductivity | New clause. | |
4 - Clause Inserted | 17.2.4 Appearance | New clause. | |
4 - Clause Inserted | 17.2.5 Weatherproofing | New Clause. | |
4 - Clause Inserted | 17.2.6 Fastener Performance Test Report | New clause. | |
4 - Clause Inserted | 17.3 MRM Soft Edge Standard | New clause. | |
4 - Clause Inserted | 17.3.1 Soft Edge Product Techincal Statement Requirements | New clause. | |
4 - Clause Inserted | 19.10 2020 – June | New clause. Revision detail. | |
0 - Clause Removed | 5.5 | Gutters | The clause had been removed. Gutters are now discussed in more detail in a separate clause for each type, under the main clause Types of Gutter. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 March 2020.
This update contains only minor revisions, mostly concerning grammar and punctuation fixes.
Editing and rearrangement for clarity
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
1 - Minor Errata | 5.2 | 5.3 Gutters | Easier to read layout options. |
1 - Minor Errata | 5.2.1 | 5.3.1 External Gutters (Spouting) | Grammar fix. |
1 - Minor Errata | 5.2.3 | 5.3.5 Internal Gutters | Grammar fix. |
2 - Editing and rearrangement | 5.2.4.2 | 5.4.2 Valley Design | Removed references to "Upstand Angle B" and replaced drawing "Common Valley Shapes" |
1 - Minor Errata | 5.2.4.6 | 5.4.6 Asymmetrical Valleys | Punctuation fix. |
1 - Minor Errata | 5.3.1 | 5.5.1 Rainwater Heads | Punctuation fix. |
1 - Minor Errata | 5.3.2 | 5.5.2 Sumps | Typo fix. |
1 - Minor Errata | 5.4 | 5.6 Outlets and Downpipes | Punctuation fix. |
1 - Minor Errata | 5.5.3 | 14.18.9 Gutter Installation | Minor Typo Fix. |
1 - Minor Errata | 5.6.2 | 5.3.2.1 Gutter Fall | Typo fix. |
1 - Minor Errata | 5.6.3.1 | 5.2.2.1 Duration | Replaced comparison chart with a simplified one. |
1 - Minor Errata | 8.9.1 | 8.9.1 Flashing Expansion | Grammar fix. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 December 2019.
Major Revisions
Summary of other changes in this update
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 1 | 1 Introduction | Update Revisions Message |
2 - Editing and rearrangement | 2.1 | 2.1 Definitions | Revised definition of "Load Spreading Washer", added a new item "Profiled Washer", added definition for "Finial", minor grammatical fixes. |
2 - Editing and rearrangement | 5 | 5 Roof Drainage | The entire Roof Drainage-clause had been revised. |
1 - Minor Errata | 5.1 | 5.1 NZBC: Clause E1 — Surface Water | Formatting |
4 - Clause Inserted | 5.3 Gutters | New clause. | |
4 - Clause Inserted | 5.3.1 External Gutters (Spouting) | New clause. | |
2 - Editing and rearrangement | 5.5.5 | 5.3.4 Concealed Fascia Gutters | This clause had been completely revised and renamed. |
2 - Editing and rearrangement | 5.5.4 | 5.3.5 Internal Gutters | Clause completely revised. |
4 - Clause Inserted | 5.3.5.1 Internal Gutter Design Features | New clause. | |
2 - Editing and rearrangement | 5.6 | 5.4 Valleys | Valleys had been completely revised and divided into smaller, more specific, sections. |
4 - Clause Inserted | 5.4.1 Valley Fixing | New clause. | |
4 - Clause Inserted | 5.4.2 Valley Design | New clause. | |
4 - Clause Inserted | 5.3.3 Internal Corners | New clause. | |
2 - Editing and rearrangement | 5.6.2 | 5.4.3 Bifurcated Valleys | The clause had been revised. Valleys are now discussed in smaller, more specific, clauses. |
4 - Clause Inserted | 5.4.5 Changing Angles in Valleys | New clause. | |
4 - Clause Inserted | 5.4.6 Asymmetrical Valleys | New clause. | |
4 - Clause Inserted | 7.1.3 Roof Drainage Capacity | New clause. | |
3 - Substantial change to recommendation | 5.5.7 | 5.3.6 Secret Gutters | Clause revised, for brevity and clarity. |
4 - Clause Inserted | 5.5 Rainwater Heads, Sumps, and Overflows | New clause. | |
2 - Editing and rearrangement | 5.8.1 | 5.5.1 Rainwater Heads | Clause revised, now providing more information. |
2 - Editing and rearrangement | 5.8 | 5.5.2 Sumps | This clause has been revised. |
2 - Editing and rearrangement | 5.8.2 | 5.5.3 Overflows | Clause renamed, Outlets are now discussed under Outlets and Downpipes. |
4 - Clause Inserted | 5.6 Outlets and Downpipes | New clause. | |
4 - Clause Inserted | 5.6.1 Placement of Downpipes | New clause. | |
4 - Clause Inserted | 5.6.2 Capacity Table for Common Size Downpipes | New clause. | |
2 - Editing and rearrangement | 5.5.1 | 5.3.2 Gutter Capacity Design | Clause has been revised and edited. |
4 - Clause Inserted | 5.3.2.2 Maximum Gutter Length | New clause. | |
2 - Editing and rearrangement | 5.5.2 | 5.3.2.3 Gutter Support Systems | Clause revised. |
4 - Clause Inserted | 14.18.9 Gutter Installation | New clause. | |
2 - Editing and rearrangement | 5.2 | 5.2 Roof Drainage Design | Clause had been completely revised. |
2 - Editing and rearrangement | 5.3.1 | 5.2.1 Catchment Area | Caluse has been completely revised. All calculations are now under a new clause Capacity Calculations. |
2 - Editing and rearrangement | 5.5.8 | 5.3.2.1 Gutter Fall | Clause revised and renamed. |
3 - Substantial change to recommendation | 5.3 | 5.2.2 Rainfall Intensity | Clause had been completely revised, with updated Rainfall Intensity Maps at the end of the main Clause, Roof Drainage. |
4 - Clause Inserted | 5.2.2.2 Allowance for Short-Term Intensities | New clause. | |
4 - Clause Inserted | 5.2.2.1 Duration | New clause | |
2 - Editing and rearrangement | 5.3.2 | 5.3.7 Gutter Capacity Calculator | The old clause, Capacity Calculations, replaced by a new clause of the same name but including new online tools. |
4 - Clause Inserted | 5.7.1 North Island 50-year ARI, 10-minute Rainfall Intensity Map | New clause. | |
4 - Clause Inserted | 5.7.2 South Island 50-year ARI, 10-minute Rainfall Intensity Map | New clause. | |
4 - Clause Inserted | 8.3 | 8.3 Flashing Cover | Adjusted spacing in Table 8.3A |
2 - Editing and rearrangement | 8.4.4.3 | 8.4.4.3 Step Apron | Removed reference to "Fortress Fasteners" in drawing A: Step Apron Details. |
4 - Clause Inserted | 8.4.4.4 | 8.4.4.4 Eaves Flashing | Drawing 8.4.4.4A renamed to Gutter Flashing. |
2 - Editing and rearrangement | 12.2 | 12.2 Purlin Creasing | Inserted photograph. |
4 - Clause Inserted | 17.1.2 | 17.1.1.2 Point Load Testing Standard | New Clause. |
4 - Clause Inserted | 17.3.2 | 17.1.3.2 Point Load Testing | New clause. |
1 - Minor Errata | 18.8 | 18.8 Sheet Metal Work For Roofing Contractors. | Clause revised for gender neutrality. No significant changes. |
4 - Clause Inserted | 19.12 2019 – December | Summary of Changes – December 2019 | |
0 - Clause Removed | 5.3.2.1 | Method 1: Gutter and Downpipe Capacity Determined by Graph | These methods have been replaced by online capacity calculating tools. |
0 - Clause Removed | 5.3.2.3 | Method 2: Gutter and Downpipe Capacity Determined by Calculations | These methods have been replaced by online capacity calculating tools. |
0 - Clause Removed | 5.3.3 | Roof Cladding Capacity | These methods have been replaced by online capacity calculating tools. |
0 - Clause Removed | 5.4 | Snow | Clause removed, Snow and hail are comprehensively discussed in Snow Loads. |
0 - Clause Removed | 5.4.1 | Hail | Clause removed. Leaf guards and maintenance are discussed under Gutter Maintenance. |
0 - Clause Removed | 5.5 | Gutters | The clause had been removed. Gutters are now discussed in more detail in a separate clause for each type, under the main clause Types of Gutter. |
0 - Clause Removed | 5.5.3 | Eaves Gutters | Clause deleted. Now discussed under External Gutters. |
0 - Clause Removed | 5.6.1 | Valley Catchment | This clause had been replaced with the newly developed online tool in Valley Capacity Calculations. |
0 - Clause Removed | 5.7 | Downpipes | Information previously contained in this clause is now discussed in Outlets and Downpipes. |
Out-of-band updates 16/12/2019 | |||
2 - Editing and rearrangement | 5.4.2A | 5.6.2 Capacity Table for Common Size Downpipes | Removed obsolete column for Roof Area Drained as the online calculator replaces this. |
2 - Editing and rearrangement | 5.7 | 5.3.7 Gutter Capacity Calculator | Added link to Common Sized Downpipes. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 August 2019.
Major Revisions
Summary of other changes in this update
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
4 - Clause Inserted | 19.13 2019 – August | Summary of Changes – August 2019 | |
1 - Minor Errata | 10.5 | 10.5 Building Airtightness | Minor erata: changed 36.2 to 3602 |
0 - Clause Removed | 9.4 | Penetration Positioning | Clause is now included in Penetration Design. |
2 - Editing and rearrangement | 9.5 | 9.4 Penetration Design | Revised clause. Penetration Positioning is now included in this clause. |
1 - Minor Errata | 14.8 | 14.9 Setting Out | Typo correction |
4 - Clause Inserted | 9.6 | 9.5 Boot Flashings | Changed the word profile to profiles for consistency with the rest of the document. |
4 - Clause Inserted | 9.4.2.4 Sheetmetal Penetration-Flashings Reference | New clause to compare penetration flashing options. | |
2 - Editing and rearrangement | 9.5.3 | 9.4.1.2 Under-Soaker Back Flashings | Clause renamed for consistency. |
1 - Minor Errata | 9.5.4.3 | 9.4.2.3 Cricket Back Curbs | Changed kerb to curb for consistency. |
1 - Minor Errata | 8.3 | 8.3 Flashing Cover | Corrected a misprint, removed <20mm from aprons, category B. |
1 - Minor Errata | 14.13.4 | 14.14.4 Fastener Allowance for Expansion | Fixed 8 mm for style consistency. |
2 - Editing and rearrangement | 14.12.1 | 14.13.1 Nails | Photo of Nail Pull-Out inserted. |
4 - Clause Inserted | 14.20.1 Painted Aluminium | Newly created clause dealing with Painted Aluminum products | |
4 - Clause Inserted | 14.20.2 Recommendations for Fixing Aluminium | Newly created clause setting out COP recommendations for fixing aluminium claddding. | |
0 - Clause Removed | 13 | Site Practice | Clause removed. Topics previously discussed in Site Practice is now dealt with in more detail in various clauses under Installation. |
3 - Substantial change to recommendation | 13.1 | 13 Safety | Safety has been updated in accordance with the Health and Safety at Work Act 2015 (HSWA 2015). |
3 - Substantial change to recommendation | 13.1.1 | 13.2 Responsibilities | Clause updated in accordance with the Health and Safety at Work Act (HSWA) 2015. |
3 - Substantial change to recommendation | 13.1.7 | 13.4.1 Scaffolding | Clause has been substantially revised in accordance with Worksafe: Working at height in New Zealand. |
3 - Substantial change to recommendation | 13.1.10 | 13.4.3 Safety Mesh | This clause has been substantially revised in accordance with Worksafe: Working at Height in New Zealand. |
4 - Clause Inserted | 13.4.6 Safety Harness | New clause. | |
4 - Clause Inserted | 13.4.7 Soft Landing Systems | New clause. | |
2 - Editing and rearrangement | 14.21 | 14.22 Tools Of The Trade | Picture added: Turn Up and Turn Down Tools. |
2 - Editing and rearrangement | 9.5.2 | 9.4.1.1 Over-Flashed (Watershed) Back Flashings | Clause has been renamed. |
0 - Clause Removed | 13.1.2 | Training | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.5 | Limitations Of Fall Arrest And Travel Restraint | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.4 | Residential And Light Commercial Roofing | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.13 | Roof Access During Construction | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.12 | Joining Safety Mesh | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.11 | Steel Fixing | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.9 | Personal Safety | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.8 | Mobile Scaffolds | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
0 - Clause Removed | 13.1.6 | Access | Clause removed. Whole main clause (Safety) has been substantially revised in accordance with HSWA 2015 and Worksafe guidelines. |
4 - Clause Inserted | 13.4.5 Mechanical Access Plant | New clause. | |
4 - Clause Inserted | 13.4.4 Safety Netting | New clause. | |
4 - Clause Inserted | 13.3.3 Weather Conditions | New clause. | |
4 - Clause Inserted | 13.3.2 Assessment of Existing Roof Cladding | New clause. | |
4 - Clause Inserted | 13.3.1 Safe Access to Roofs | New clause. | |
4 - Clause Inserted | 13.3 Working on Roofs | New clause. | |
4 - Clause Inserted | 13.2.4.1 Other People's Responsibilities | New clause. | |
4 - Clause Inserted | 13.2.4 Other People | New clause. | |
4 - Clause Inserted | 13.2.1 PCBU | New clause. | |
4 - Clause Inserted | 13.2.3.1 Workers' Responsibilities | New clause. | |
4 - Clause Inserted | 13.2.3 Workers | New clause. | |
4 - Clause Inserted | 13.2.2.1 Officer Responsibilities | New clause. | |
4 - Clause Inserted | 13.2.2 Officers | New clause. | |
4 - Clause Inserted | 13.2.1.1 PCBU Responsibilities | New clause. | |
4 - Clause Inserted | 9.5.5 | 9.4.2.5 Sheetmetal Flashings on Corrugated Profiles | This clause has been revised and renamed to specifically show sheetmetal flashings on corrugated profiles. |
4 - Clause Inserted | 3.15.4 Standing Seam | New clause. | |
4 - Clause Inserted | 3.15.3 Trough Section | New clause. | |
2 - Editing and rearrangement | 14.3.2 | 14.3.2 Wet Storage Damage | Removed reference to "Fretting". |
2 - Editing and rearrangement | 2.1 | 2.1 Definitions | Updated Glossary item: "Fretting" |
2 - Editing and rearrangement | 4.12 | 4.11 Inert Catchment | Inserted photo "Localised Damage due to Inert Catchment". |
1 - Minor Errata | 14.4 | 14.4 Site Safety | Fixed link: Safety |
1 - Minor Errata | 14.5 | 14.5 Handling | Minor grammatical fix. |
1 - Minor Errata | 14.7.1 | 14.7.1 Storing Product with Strippable Film | Grammar fix. |
1 - Minor Errata | 14.7.2 | 14.7.2 Using Strippable Film | Grammar fix. |
1 - Minor Errata | 14.1 | 14.11 Overhang | Drawing tidy up. |
4 - Clause Inserted | 17.1 Metal Cladding Testing | New Clause, to replace Testing. | |
4 - Clause Inserted | 17.1.1 Standards: AS Standards and COP Testing Standard | New clause. | |
4 - Clause Inserted | 17.1.2 Test Requirements | New Clause | |
4 - Clause Inserted | 17.1.2.1 Supporting Structure and Equipment | New Clause | |
4 - Clause Inserted | 17.1.2.2 Test Set-up | New clause. | |
4 - Clause Inserted | 17.1.2.2.1 Number of Specimens | New clause. | |
4 - Clause Inserted | 17.1.2.2.2 Width of Specimen | New clause. | |
4 - Clause Inserted | 17.1.2.2.3 Number of Spans | New clause. | |
4 - Clause Inserted | 17.1.3 Testing Procedure | New clause. | |
4 - Clause Inserted | 17.1.3.1 UDL Testing | New clause. | |
4 - Clause Inserted | 17.1.5 Publishing Results | New clause. | |
4 - Clause Inserted | 17.1.5.1 Allowance for Variation | New clause. | |
0 - Clause Removed | 17 | Testing | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.2 | Background to Scope | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.1 | Scope | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.3 | General Methods Of Testing Sheet Roof And Wall Cladding | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.4 | Commentary On 16.3 | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.5 | Determining Wind load Span Graphs | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.6 | Specific Methods Of Testing Sheet Roof And Wall Cladding | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.7 | Wind and Point Load Testing | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.8 | Method: Resistance To Wind Pressures For New Zealand | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
0 - Clause Removed | 17.9 | Background to wind load testing | The entire clause Testing has been substantially revised and published as Structural Testing to give better guidance on testing according to the Code of Practice Standards. |
4 - Clause Inserted | 17.1.5.3 Interpreting Point Load Results | New clause. | |
4 - Clause Inserted | 17.1.3.2 Point Load Testing | New clause. | |
4 - Clause Inserted | 17.1.1.1 UDL Load Testing Standard | New clause. | |
4 - Clause Inserted | 9.4.2.7 Cricket Over-Flashing More Than 1 m Wide | New clause. | |
4 - Clause Inserted | 9.4.3 Dormer Details | New clause. | |
4 - Clause Inserted | 17.1.1.2 Point Load Testing Standard | New Clause. | |
1 - Minor Errata | 14.2.2 | 14.2.2 Ordering | Punctuation fix. |
3 - Substantial change to recommendation | 13.1.3.1 | 13.4.2 Roof Edge Protection | Clause has been substantially revised in accordance with Worksafe: Working at Height in New Zealand. |
3 - Substantial change to recommendation | 13.1.3 | 13.4 Working At Height | Clause has been substantially revised in accordance with the HSWA 2015. |
4 - Clause Inserted | 9.4.2.6 Sheetmetal Flashings on Trapezoidal Profiles | New clause, specifically showing penetration flashings on trapezoidal profiles. | |
3 - Substantial change to recommendation | 14.19 | 14.20 Fixing Aluminium Sheeting | Section comprehensively revised to better reflect good trade practice and Manufacturer’s recommendations. |
2 - Editing and rearrangement | 3.15 | 3.15 Profile Shape | Inserted new Drawing: Profile Types |
2 - Editing and rearrangement | 3.15.2 | 3.15.2 Trapezoidal Profile | Removed drawing in favour of a more descriptive drawing: Profile Types. |
4 - Clause Inserted | 9.5.1 | 9.4.1 Sheetmetal Penetration Back Flashings | Table removed. |
4 - Clause Inserted | 17.1.4 Test Report | New clause. | |
4 - Clause Inserted | 17.1.5.2 Interpreting UDL Load Results | New clause. | |
4 - Clause Inserted | 17.1.3.2 Point Load Testing | New clause. |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), are effective 1 May 2019.
Important updates:
The main clause Roof Ventilation was renamed 10 Internal Moisture and completely revised and updated. The revised clause recommends designing and installing roof cladding to allow natural ventilation in residential buildings and requires design to enable ventilation in skillion, sarked, and low-pitched residential roofs.
Summary of other changes in this update
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 2.1 | 2.1 Definitions | Updated Glossary to include the terms: "Square Stopping". |
2 - Editing and rearrangement | 3.5.4 | 3.5.4 Load Distribution | Minor edit to drawing (3.5.4C Deflection and the Square of Depth ) |
1 - Minor Errata | 3.12.1.1 | 3.12.1.1 Steel Purlins Thinner Than 1 mm | Edited for Consistency – changed 1.1 mm to 1 mm. |
1 - Minor Errata | 4.1 | 4.1 NZBC Clause B2 (Extract) | Revised for clarity. |
1 - Minor Errata | 4.1.1 | 4.1.1 B2 Objective | Reformatting |
1 - Minor Errata | 4.1.2 | 4.1.2 B2 Functional Requirements | Reformatting |
1 - Minor Errata | 4.1.3 | 4.1.3 Performance Requirements | Reformatting |
2 - Editing and rearrangement | 4.11.6 | 4.10.6 Capillary Action | Changed minimum cover in 4.10.6B Roofing Sheet End Lap to closer reflect MRM recommendations and renamed the drawing. |
1 - Minor Errata | 5.3.2.3 | 5.3.2.3 Method 2: Gutter and Downpipe Capacity Determined by Calculations | Fixed broken link to E Standard Gutter Capacity and F Standard Down Pipe Capacity, and rewrote link copy for greater clarity. |
2 - Editing and rearrangement | 8.9.1 | 8.9.1 Flashing Expansion | First line revised for clarity. |
2 - Editing and rearrangement | 10 | 10 Internal Moisture | Clause renamed to Internal Moisture.
Clause revised for clarity.
|
2 - Editing and rearrangement | 10.1 | 10.9 Minimising Ingress of Water Vapour into the Ceiling Cavity | Clause renamed and revised for clarity. |
4 - Clause Inserted | 10.1.1 | 10.1.1 E3 Objective | New Clause |
4 - Clause Inserted | 10.1.2 | 10.1.2 E3 Functional Requirements | New Clause created |
4 - Clause Inserted | 10.1.3 | 10.1.3 E3 Performance Requirements | New clause created. |
4 - Clause Inserted | 10.2 | 10.2 Why Manage Internal Moisture | Newly created clause |
2 - Editing and rearrangement | 10.4 | 10.3 Special Requirements | Clause revised for clarity and relevance. |
0 - Clause Removed | 10.4 | 10.4 The External Environment | Clause removed, information has been revised and moved to other main clauses. |
2 - Editing and rearrangement | 10.5 | 10.4 Condensation | Clause completely rewritten. |
2 - Editing and rearrangement | 10.6 | 10.5 Building Airtightness | Clause completely rewritten. |
0 - Clause Removed | 10.6.1 | 10.6.1 Natural Ventilation | Clause removed. New drawings used in more relevant clauses. |
4 - Clause Inserted | 10.7 | 10.6 Insulation | Newly created clause. |
4 - Clause Inserted | 10.7.1 | 10.6.1 Insulation Position | Newly created clause |
4 - Clause Inserted | 10.7.2 | 10.6.2 Other Insulation | Newly created clause |
0 - Clause Removed | 10.7.4.1 | 10.7.4.1 Direction of Lay | Clause delted. Information is now discussed in Horizontal laying and Vertical laying. |
0 - Clause Removed | 10.7.5 | 10.7.5 Non-Residential Buildings | Clause removed. Information is discussed elsewhere. |
2 - Editing and rearrangement | 10.8 | 10.7 Climate | Clause revised for clarity. |
0 - Clause Removed | 10.8 | 10.8 Wall Underlay | Clause removed and content discussed i other relevant clauses. |
4 - Clause Inserted | 10.8.1 | 10.7.1 Humidity | Relative humidity (RH, given in per cent [%]), is the most widely known method: It gives the content of water vapour in the air relative to the maximum amount of water this parcel of air can hold at its present temperature.
Other measures are absolute humidity and water vapour pressure. |
2 - Editing and rearrangement | 10.9 | 10.8 Moisture Sources | Renamed and revised clause for clarity. Lead clause for various "Sources of Internal Moisture" |
4 - Clause Inserted | 10.9.1 | 10.8.1 Occupant Behaviour | Newly created clause, combining new information with some from revised "Managing Water Vapout at the Source" (renamed Sources of Internal Moisture). |
4 - Clause Inserted | 10.9.2 | 10.8.2 Heating | Newly created clause |
2 - Editing and rearrangement | 10.9.4 | 10.8.4 Construction Moisture | Clause revised for clarity. |
4 - Clause Inserted | 10.9.5 | 10.8.5 Ground Moisture | Newly created clause |
2 - Editing and rearrangement | 10.11 | 10.10 Ventilation Pathways | Clause revised for clarity. |
4 - Clause Inserted | 10.11.1 | 10.10.1 Methods of Ventilation | Newly created clause |
4 - Clause Inserted | 10.11.1.1 | 10.10.1.1 Soffit Vents | Newly created clause. |
4 - Clause Inserted | 10.11.1.2 | 10.10.1.2 Fascia Vents | Newly created clause |
4 - Clause Inserted | 10.11.1.3 | 10.10.1.3 Ridge Vents | Clause renamed and revised for clarity. |
2 - Editing and rearrangement | 10.11.1.4 | 10.10.1.5 Turbine Vents | Clause revised for clarity. |
4 - Clause Inserted | 10.11.2 | 10.10.2 Battens | Newly Created clause. |
2 - Editing and rearrangement | 10.12 | 10.11 Underlay | Clause revised and expanded for clarity. |
4 - Clause Inserted | 10.12.1 | 10.11.1 Underlay Requirements | Newly created clause. |
2 - Editing and rearrangement | 10.12.2 | 10.11.2 Types Of Underlay | Clause revised for clarity. |
4 - Clause Inserted | 10.12.3 | 10.11.3 Underlay Usage | Clause revised for clarity. |
2 - Editing and rearrangement | 10.12.4 | 10.11.4 Underlay Durability | Clause revised and expanded. |
2 - Editing and rearrangement | 10.12.5 | 10.11.5 Installing Underlay | Clause revised and expanded. |
4 - Clause Inserted | 10.12.5.1 | 10.11.5.1 Horizontal Laying | Newly created clause. |
4 - Clause Inserted | 10.12.5.2 | 10.11.5.2 Vertical Laying | Newly created clause. |
2 - Editing and rearrangement | 10.12.5.3 | 10.11.5.3 Underlay Support | Clause revised. |
2 - Editing and rearrangement | 10.13 | 10.12 Additional Information | Clause renamed to Additional Information. |
2 - Editing and rearrangement | 10.13.1 | 10.12.1 Cold Roofs | Clause revied for clarity. |
2 - Editing and rearrangement | 10.13.2 | 10.12.2 Warm Roofs | Clause revised for clarity. |
2 - Editing and rearrangement | 10.13.3 | 10.12.3 Night Sky Radiation | Clause revised for clarity. |
2 - Editing and rearrangement | 10.13.4 | 10.12.4 The Mechanics of Condensation | Clause revised and renamed, it is now: The Mechanics of Condesation. |
4 - Clause Inserted | 10.13.5 | 10.12.5 Underlay Standards | Newly created clause. |
4 - Clause Inserted | 10.13.6 | 10.12.6 Relative Humidity | Newly created clause |
4 - Clause Inserted | 10.13.7 | 10.12.7 Absolute Humidity | Newly created clause |
4 - Clause Inserted | 10.13.8 | 10.12.8 Water Vapour Pressure | Newly created clause |
2 - Editing and rearrangement | 13.2 | 13.1.13 Roof Access During Construction | Clause movved to 13 Safety |
0 - Clause Removed | 13.4 | 13.4 Acceptance Of Materials | class="views-field views-field-field-revision-message-revision-id"> |
0 - Clause Removed | 13.4.1 | 13.4.1 Presence Of Moisture Between Sheets | Clause combined with 14.3.2 Wet Storage Damage |
0 - Clause Removed | 13.4.2 | 13.4.2 Colour Match | Clause combined with 14.19.5 Colour Matching Paint |
0 - Clause Removed | 13.4.3 | 13.4.3 Storage Stain | Clause removed. |
0 - Clause Removed | 13.5 | 13.5 Roof Loading | Clause combined with 14.3.1 Unloading |
2 - Editing and rearrangement | 14 | 14 Installation | Clause revised for clarity. |
2 - Editing and rearrangement | 14.1 | 14.1 Pre- Installation | Clause revised for clarity. |
2 - Editing and rearrangement | 14.1 | 14.11 Overhang | Clause revised for clarity |
0 - Clause Removed | 14.1 | 14.10 Metal Roof Defects | Clause removed. See 14.19.1 Roof Cladding Damage |
0 - Clause Removed | 14.1.5 | 14.1.5 Cutting And Drilling | Clause deleted. Information was spread through other clauses, mainly 14.18.4.4 Repairing Swarf Damage |
4 - Clause Inserted | 14.2 | 14.2 Product Selection | Newly Created Clause |
2 - Editing and rearrangement | 14.2 | 14.21 Completion | Clause revised for clarity. |
4 - Clause Inserted | 14.2.1 | 14.2.1 Measuring | Newly created clause |
0 - Clause Removed | 14.2.1 | 14.2.1 Swarf Removal | clause removed, subject is now discussed in 14.19.4.1 Preventing Swarf Damage. |
4 - Clause Inserted | 14.2.2 | 14.2.2 Ordering | Newly created clause. |
2 - Editing and rearrangement | 14.2.3 | 14.2.3 Transportation | Clause revised for clarity and moved to 14 Installation. |
4 - Clause Inserted | 14.3 | 14.3 Accepting Delivery | New created clause, combining Acceptance of Materials, previously in Site Practice. |
4 - Clause Inserted | 14.3.1 | 14.3.1 Unloading | Newly created clause |
0 - Clause Removed | 14.3.1 | 14.3.1 Primary Fasteners | Clause removed. Information is now discussed in various shorter and newly created clauses. |
4 - Clause Inserted | 14.3.2 | 14.3.2 Wet Storage Damage | Newly created clause |
0 | 14.4 | 14.4 Secondary Fasteners | class="views-field views-field-field-revision-message-revision-id"> |
0 - Clause Removed | 14.4.2 | 14.4.2 Monel Rivets | clause removed, information is now discussed in other clauses. |
0 - Clause Removed | 14.4.3 | 14.4.3 Aluminium Rivets | Clause removed, information now in 14.13.4 Rivets |
0 - Clause Removed | 14.4.4 | 14.4.4 Stainless Steel Rivets | Clause deleted. See 14.13.4 Rivets |
0 - Clause Removed | 14.4.6 | 14.4.6 Fastener Frequency | Clause removed. See 14.14.1 Fastener Spacing |
2 - Editing and rearrangement | 14.5 | 14.5 Handling | Clause revised for clarity and moved to Installation. |
0 - Clause Removed | 14.5.2 | 14.5.2 Pan Fixing | Clause Removed. See 14.13.2 Screws |
0 - Clause Removed | 14.5.3 | 14.5.3 Expansion Fixings | Clause removed. See 14.14.4 Fastener Allowance for Expansion |
0 - Clause Removed | 14.5.4 | 14.5.4 Lap Stitching | Clause removed. Information absorbed in other clauses. |
2 - Editing and rearrangement | 14.6 | 14.6 Walking On Roofs | Clause revised for clarity and moved to 14 Installation. |
0 - Clause Removed | 14.6 | 14.6 Installation | Empty heading removed. See 14.14 Fastener Installation. |
4 - Clause Inserted | 14.6.1 | 14.6.1 Footwear | Newly created clause |
2 - Editing and rearrangement | 14.7 | 14.7 Strippable Films | Clause revied for clarity. |
0 - Clause Removed | 14.7 | 14.7 Re-Roofing | Clause removed. Information absorbed in other clauses. |
4 - Clause Inserted | 14.7.1 | 14.7.1 Storing Product with Strippable Film | Newly created clause |
2 - Editing and rearrangement | 14.8 | 14.9 Setting Out | Clause revised for clarity. |
0 - Clause Removed | 14.8.2 | 14.8.2 Side Lap Fixing Between Purlins | Clause removed. |
0 - Clause Removed | 14.8.6 | 14.8.6 Purlin Protection | clause removed |
0 - Clause Removed | 14.8.7 | 14.8.7 Drainage | Clause removed |
0 - Clause Removed | 14.8.8 | 14.8.8 Condensation | Clause removed. |
4 - Clause Inserted | 14.9 | 14.10 Marking and Cutting | Newly created clause |
2 - Editing and rearrangement | 14.11 | 14.12 Sealing and Joining | Clause revised for clarity |
4 - Clause Inserted | 14.11.1 | 14.12.1 Sealing End Laps | Newly created clause |
2 - Editing and rearrangement | 14.12 | 14.13 Fasteners | Clause revised for clarity. |
0 | 14.12.1 | 14.13.1 Nails | class="views-field views-field-field-revision-message-revision-id"> |
2 - Editing and rearrangement | 14.12.2 | 14.13.2 Screws | Clause revised for clarity. |
4 - Clause Inserted | 14.12.3 | 14.13.3 Clip Fasteners | Newly created clause. |
2 - Editing and rearrangement | 14.12.4 | 14.13.4 Rivets | Clause revised for clarity |
2 - Editing and rearrangement | 14.13 | 14.14 Fastener Installation | Clause renamed and revised for clarity. |
2 - Editing and rearrangement | 14.13.1 | 14.14.1 Fastener Spacing | Newly created clause |
4 - Clause Inserted | 14.13.2 | 14.14.2 Fastener Placement | Newly created clause |
4 - Clause Inserted | 14.13.3 | 14.14.3 Fastener Seating | Newly created clause |
4 - Clause Inserted | 14.13.4 | 14.14.4 Fastener Allowance for Expansion | Newly created clause |
4 - Clause Inserted | 14.14 | 14.15 Modes Of Fastener Failure | Clause revised for clarity |
4 - Clause Inserted | 14.15 | 14.16 Stop-ends | Clause revised for clarity. |
2 - Editing and rearrangement | 14.16 | 14.17 Turndowns (Drip Forming or Drip Edging) | Clause revised for clarity. |
4 - Clause Inserted | 14.17 | 14.18 Soft edging and Flashing | Newly created clause |
4 - Clause Inserted | 14.18 | 14.19 Avoiding Problems | Newly created clause heading |
2 - Editing and rearrangement | 14.18.1 | 14.19.1 Roof Cladding Damage | Clause revised for clarity and moved to 14 Installation |
4 - Clause Inserted | 14.18.2 | 14.19.2 Water Ponding | Newly created clause |
4 - Clause Inserted | 14.18.3 | 14.19.3 Correctly Installed Gutters | Newly created clause |
0 | 14.18.4 | 14.19.4 Swarf Damage | class="views-field views-field-field-revision-message-revision-id"> |
4 - Clause Inserted | 14.18.4.1 | 14.18.4.1 Identifying Swarf Stains | Newly created clause |
4 - Clause Inserted | 14.18.4.2 | 14.19.4.1 Preventing Swarf Damage | Newly created clause |
4 - Clause Inserted | 14.18.4.3 | 14.18.4.3 Swarf Effect on Performance | Newly created clause. |
2 - Editing and rearrangement | 14.18.4.4 | 14.18.4.4 Repairing Swarf Damage | Clause revised for clarity and renamed. |
4 - Clause Inserted | 14.18.4.5 | 14.19.4.2 Severe or Extensive Swarf Staining | Newly created clause. |
4 - Clause Inserted | 14.18.5 | 14.19.5 Colour Matching Paint | Newly created clause |
4 - Clause Inserted | 14.18.6 | 14.19.6 Field Painting | Newly created clause. |
4 - Clause Inserted | 14.18.7 | 14.19.7 Sunscreen | Newly created clause. |
4 - Clause Inserted | 14.18.8 | 14.18.8 Removing Lichen | Newly created clause. |
2 - Editing and rearrangement | 14.21 | 14.22 Tools Of The Trade | Claused revised for clarity. |
4 - Clause Inserted | 14.21.1 | 14.22.1 Spacing | Clause removed. See 14.14.1 Fastener Spacing |
4 - Clause Inserted | 14.22.1 | 14.23.1 Crest Fixing | Clause removed. See 14.13.2 Screws |
4 - Clause Inserted | 14.23 | 14.6.2 Tools | Clause removed. See 14.13.2 Screws |
4 - Clause Inserted | 14.24 | 14.8 Translucent Sheeting | Clause removed. |
4 - Clause Inserted | 14.24.1 | 14.8.1 Side-Lap Fixing | Clause removed. |
4 - Clause Inserted | 14.24.2 | 14.8.3 End Laps | Clause deleted. |
4 - Clause Inserted | 14.24.3 | 14.8.4 Midspan Supports | Clause removed |
4 - Clause Inserted | 14.24.4 | 14.8.5 Stopends | Clause removed. |
4 - Clause Inserted | 14.24.5 | 14.8.9 Pitch | Clause removed. |
2 - Editing and rearrangement | 17 | 17 Testing | Edited for clarity. |
2 - Editing and rearrangement | 17.1 | 17.1 Scope | Clause revised for clarity |
1 - Minor Errata | 17.1.2 | 17.1.2 Resistance to point load | Fixed typos – "serviceability" and "strength". |
2 - Editing and rearrangement | 17.2 | 17.2 Background to Scope | Heading changed from "Commentary on 16.1" and clause revised for clarity and brevity. |
4 - Clause Inserted | 17.4 | 17.4 Commentary On 16.3 | Clause removed |
2 - Editing and rearrangement | 17.5 | 17.5 Determining Wind load Span Graphs | Minor grammatical edits and clause renamed to "Determining Wind Load Span Graphs" to avoid confusion with 3.17 Steel Cladding Wind Load Span Graphs. |
1 - Minor Errata | 17.6 | 17.6 Specific Methods Of Testing Sheet Roof And Wall Cladding | Clause moved (renumbered) to follow 17.7 Wind and Point Load Testing. |
4 - Clause Inserted | 17.7.1 | 17.7.1 Commentary On Section 15.5 | Clause Removed. 17 Testing to undergo major revision. |
2 - Editing and rearrangement | 17.9 | 17.9 Background to wind load testing | Renamed "Clause from Commentary on 16.6". |
The following updates to the NZ Metal Roof and Wall Cladding Code Practice (COP), is effective 1 February 2019.
In this update, no recommendations have been altered that would require changes to existing projects in progress.
Summary of Changes in this Update
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 3.12.1 | 3.12.1 Screw Fasteners | Clauses dealing with fixing to specific purlin types re-ordered for clarity. |
1 - Minor Errata | 3.13.1 | 3.15.1 Corrugate Profile | Minor grammatical editing for clarity. |
1 - Minor Errata | 3.14.3 | 3.16.3 Maximum Spans for Corrugate Wall Cladding | Heading says 0.40 mm but Table is .40 and .55. So remove .40 from heading |
1 - Minor Errata | 4.6.1 | 4.6.1 Assessment of Marine Environments | Removed full stop from the heading. |
2 - Editing and rearrangement | 4.8.1 | 4.8.4 Lichen | Resized photo (4.8.4A Lichen on a Metal Roof) and inserted photo (4.8.4B Permanent Damage from Lichen Growth. |
2 - Editing and rearrangement | 4.15 | 4.14 Swarf Staining and Cut Edge Corrosion | Renamed clause. Resized photos and inserted new photo ( 4.14D Cut Edge Corrosion ) |
1 - Minor Errata | 4.17.3 | 4.16.3 Aluminium | fixed spelling of "quaters" to quarters |
1 - Minor Errata | 4.18.1.3 | 4.17.1.3 Top Coat and Backer | 0 |
1 - Minor Errata | 5.3.1 | 5.2.1 Catchment Area | Removed (Optional Caption) from A Wind-effect on Rain |
1 - Minor Errata | 6.1.1 | 6.1.1 E2 Objective | Set format as Block Quote |
1 - Minor Errata | 6.1.2 | 6.1.2 E2 Functional Requirement | Format as block Quote. |
1 - Minor Errata | 6.3 | 6.3 Related Topics | Changed link "Internal Moisture" to "Roof Ventilation. |
2 - Editing and rearrangement | 9.5.6 | 9.4.2.5 Sheetmetal Flashings on Corrugated Profiles | Revised and renamed clause. |
1 - Minor Errata | 14.5.1 | 14.23.1 Crest Fixing | Corrected minimum embedment into soft wood from 35mm to 30mm aligning with E2/AS1 and other reference in 3.12.1.3 Timber Purlins |
The NZ Metal Roof and Wall Cladding Code Practice (COP), has been updated effective 1 November 2018.
In this Update no recommendations have been altered that would require changes to existing projects in progress
The previous External Moisture, Flashings and Penetrations sections have been updated to closer reflect the requirements of NZBC Clause E2 – External Moisture.
All clauses and sub-clauses in these sections have been substantially revised and drawings updated to show details more clearly.
6 External Moisture Overview gives a general introduction and overview of NZBC Clause E2 – External Moisture.
7 External Moisture Roofing discusses requirements for roof and wall cladding.
8 External Moisture Flashings deals with flashings, seals and laps.
9 External Moisture Penetrations recommends good practice for penetration design and installation.
Other updates consist of Category 1 – minor errata corrections to spelling, and grammar and layout.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
2 - Editing and rearrangement | 4.5.2 | 4.5.2 Sea Spray | Moved copy dealing with corrosion from "Eaves Flashing" to "Sea Spray". |
1 - Minor Errata | 4.11.8 | 4.10.8 Microcracking | Correction to comparative scale of illustrations |
0 - Clause Removed | 6.1.1 | 7.1.1 Conduction | |
4 - Clause Inserted | 6.1.1 | 6.1.1 E2 Objective | E2 Objective under NZBC Clause E2 (Extract) |
4 - Clause Inserted | 6.1.2 | 6.1.2 E2 Functional Requirement | New clause to follow E2 Objective. |
4 - Clause Inserted | 6.1.3 | 6.1.3 E2 Performance Requirements | New clause to follow "Functional Requirement". |
0 - Clause Removed | 6.1 | 7.1 Heat | Clause removed, see 7.3 Thermal Expansion And Contraction. |
4 - Clause Inserted | 6.1 | 6.1 NZBC Clause E2 External Moisture (Extract) | New Clause under External Moisture — General. |
4 - Clause Inserted | 6.2.1 | 6.2 Compliance | New 2nd level clause to follow "Acceptable Solution NZBC E2/AS1" |
0 - Clause Removed | 6.2.2.1 | 7.4.2.1 Profile Strength | Subject now discussed in 7.3 Thermal Expansion And Contraction. |
2 - Editing and rearrangement | 6.2.2.3 | 8.9 Flashing Expansion Details | Completely revised clause. |
2 - Editing and rearrangement | 6.2.2.4 | 8.9.2 Building Expansion Joints | Clause duplicated. |
4 - Clause Inserted | 6.2 | 6.2 Acceptable Solution NZBC E2/AS1 | New 2nd level clause to follow "Limits on Applications. " |
0 - Clause Removed | 6.3 | 8.15 Sealing Washers | |
4 - Clause Inserted | 6.3 | 6.3 Related Topics | New 1st level heading under "External Moisture — General" |
3 - Substantial change to recommendation | 6.5.2 | 7.1.2 Runoff | Clause completely revised. |
0 - Clause Removed | 6.5.3 | 7.2.3 Snow | Clause removed, combined with 5.4 Snow. |
0 - Clause Removed | 6.5.4 | 7.2.4 Hail | Clause removed combined with 5.4.1 Hail. |
2 - Editing and rearrangement | 6 | 6 External Moisture Overview | Clause completely revised to reflect all four COP clauses dealing with E2 External Moisture. |
3 - Substantial change to recommendation | 7.1.1 | 7.1.1 Minimum Roof Cladding Pitch | Clause completely revised. |
0 - Clause Removed | 7.1 | 7.1 Radiation | |
0 - Clause Removed | 7.1 | 8.1 Purpose | Clause removed, included in 8 External Moisture Flashings. |
2 - Editing and rearrangement | 7.2.1 | 8.1.1 Flashing Durability | Completely revised and renamed clause renamed (previously "compatibility"). |
0 - Clause Removed | 7.2 | 7.2 Convection | |
2 - Editing and rearrangement | 7.2 | 7.1 Roof Pitch | Clause completely revised. To be the first sub-clause under External Moisture — Cladding. |
2 - Editing and rearrangement | 7.2 | 8.1 Flashing Materials | Completely revised clause |
4 - Clause Inserted | 7.2 | 7.2 Fastening Roofing | New sub-clause to be inserted at the end of Roof Pitch under External Moisture — Cladding. |
3 - Substantial change to recommendation | 7.3.1 | 7.3.1 Temperature Range | Completely Revised and rewritten. To follow "Thermal Expansion and Contraction" under the new level 1 Clause: "Cladding" |
4 - Clause Inserted | 7.3.1 | 8.3.4 Flashing Laps | Completely revised and shortened clause. |
3 - Substantial change to recommendation | 7.3.2 | 7.3.2 Roof Cladding Expansion Provisions | Completely Revised and Rewritten. To follow "Steel Cladding Temperature Ranges" in "Thermal expansion and Contraction" under new Level 1 Clause: "Cladding". |
2 - Editing and rearrangement | 7.3 | 7.3 Thermal Expansion And Contraction | Completely revised and redone. To be moved under new level 1 Clause: External Moisture Cladding. |
0 - Clause Removed | 7.4.1.1 | 8.6.1.1 Ridge - Hip Intersections | Clause incorporated into 8.4.1 Ridge And Hip. |
2 - Editing and rearrangement | 7.4.2 | 8.4.2 Barge And Verge | Completely revised clause. |
0 - Clause Removed | 7.4.2.1 | 8.6.2.1 Internal Barge Flashing | Incorporated into parent clause. |
2 - Editing and rearrangement | 7.4.2.2 | 8.4.2.1 Ridge – barge Intersections | Completely revised clause. |
2 - Editing and rearrangement | 7.4.4 | 8.4.4 Apron Flashings | Completely revised clause |
2 - Editing and rearrangement | 7.4.4.1 | 8.4.4.1 Parapet And Apron Capping Terminations | Completely revised clause. |
2 - Editing and rearrangement | 7.4.4.3 | 8.4.4.3 Step Apron | Completely revised clause. Drawings updated. |
2 - Editing and rearrangement | 7.4.4.4 | 8.4.4.4 Eaves Flashing | Completely revised and renamed clause. (Previously "Gutter Apron"). Drawing updated. |
0 - Clause Removed | 7.4.5 | 8.6.5 Valley Flashings | Clause removed. Valleys are discussed in "Roof Drainage". |
2 - Editing and rearrangement | 7.4.6 | 8.4.5 Curved Flashings | Completely revised clause. |
2 - Editing and rearrangement | 7.4.6.1 | 8.4.5.1 Lockseamed Flashings | Revised clause. Information added. |
0 - Clause Removed | 7.4.6.2 | 8.6.6.2 Jennied Flashings | Clause removed — all references to "jennying" has been removed from "Flashings". |
4 - Clause Inserted | 7.4.6.3 | 8.4.5.2 Crimped Flashings | New clause under 8.4.5 Curved Flashings. |
0 - Clause Removed | 7.4.7 | 8.6.7 Soffit Flashings | Clause removed. |
2 - Editing and rearrangement | 7.4 | 7.4 End Laps | Clause completely revised. |
2 - Editing and rearrangement | 7.4 | 8.4 Flashing Types | The last line edited. |
0 - Clause Removed | 7.5.1 | 8.12.1 Unpainted Metal Cladding | Clause removed. |
0 - Clause Removed | 7.5.2 | 8.12.2 Ventilation and Cavities | Clause removed. |
0 - Clause Removed | 7.5.3 | 8.12.3 Window and Door Flashings in Metal Cladding | |
0 - Clause Removed | 7.5.4 | 8.12.4 Horizontal Metal Cladding | |
0 - Clause Removed | 7.5.5 | 8.12.5 General Principles | |
0 - Clause Removed | 7.5.6 | 8.12.6 Flush Window Flashings | Clause removed. |
0 - Clause Removed | 7.5.7 | 8.12.7 Recessed Window Flashings | Clause removed. |
0 - Clause Removed | 7.5.8 | 8.12.8 Butt Window Flashings | Clause removed. |
0 - Clause Removed | 7.5.9 | 8.12.9 Flashings For Vertical Cladding | |
0 - Clause Removed | 7.5.10 | 8.12.10 Alternative Flashing Designs | |
2 - Editing and rearrangement | 7.5 | 8.10 Metal Wall Cladding Flashings | Completely revised and renamed clause. |
0 - Clause Removed | 7.6 | 8.13 Flashings For Vertical Cladding | Clause removed. |
0 - Clause Removed | 7.7 | 8.14 Flashings For Horizontal Corrugate Cladding | Clause Removed. |
2 - Editing and rearrangement | 7.8.1 | 8.5.1 Primary Fasteners | Completely revised and shortened clause. |
2 - Editing and rearrangement | 7.8.2 | 8.5.2 Secondary Fasteners | Completely revised clause. |
0 - Clause Removed | 7.8.3 | 8.7.3 Secret Fixing Clips | Clause deleted. |
2 - Editing and rearrangement | 7.8.4 | 8.5.3 Flashing Cleats | |
4 - Clause Inserted | 7.8.5 | 8.5.4 Seams | Split the drawing into eight individual drawings, for improved layout. |
2 - Editing and rearrangement | 7.8 | 8.5 Fastening Flashings | Clause renamed. |
0 - Clause Removed | 7.9.1 | 8.8.1 Properties | Clause removed. Discussed in 8.6 Sealants. |
2 - Editing and rearrangement | 7.9.2 | 8.6.1 Methods Of Sealing | Revised clause |
2 - Editing and rearrangement | 7.9.3 | 8.6.2 Surface Preparation | Clause shortened. |
0 - Clause Removed | 7.9.5 | 8.8.5 Sealed Laps | Clause removed see: A Sealed End Lap. |
0 - Clause Removed | 7.9.6 | 8.8.6 Strip Sealants | Clause removed. |
0 - Clause Removed | 7.9.7 | 8.8.7 Soldered Joints | Clause Removed. |
2 - Editing and rearrangement | 7.9 | 8.6 Sealants | Completely revised clause. |
0 - Clause Removed | 7.10.1 | 8.9.1 Vented Fillers | |
2 - Editing and rearrangement | 7.10.2 | 8.7.1 Soft Edging | Revised and renamed clause. |
2 - Editing and rearrangement | 7 | 8 External Moisture Flashings | Completely revised clause. |
4 - Clause Inserted | 7 | 7 External Moisture Roofing | New Level 1 clause. |
0 - Clause Removed | 8.1 | 9.1 General | Clause removed. General discussion incorporated in the introduction. |
2 - Editing and rearrangement | 8.2.1 | 9.2 Additional Support | Completely revised and renamed clause. |
2 - Editing and rearrangement | 8.2.2 | 9.3 Penetration Durability and Compatibility | Completely revised and renamed clause. |
0 - Clause Removed | 8.2.3 | 9.5 Corrosion | Incorporated into "9.3 Penetration Durability and Compatibility". |
0 - Clause Removed | 8.2.4 | 9.5.1 Catchment | Clause removed. |
0 - Clause Removed | 8.2.5 | 9.5.2 Obstruction | Clause removed. |
0 - Clause Removed | 8.2.6 | 9.5.3 Discharge Capacity | Clause removed, see |
0 - Clause Removed | 8.2.7 | 9.5.4 Sealing | Clause removed. (Information is repeated in 8 External Moisture Flashings) |
0 - Clause Removed | 8.2.8 | 9.5.5 Alternative Materials | Clause removed, see 8.7.1 Soft Edging. |
2 - Editing and rearrangement | 8.2 | 8.2 Flashing Design | Completely revised and shortened clause |
2 - Editing and rearrangement | 8.2 | 9.1 Penetrations Minimum Pitch | Completely revised and renamed clause. |
0 - Clause Removed | 8.3.1 | 9.7.6 Nomenclature | Clause removed. More details added in 9.4 Penetration Design. |
0 - Clause Removed | 8.3.2 | 9.7.7 Diverter Or Cricket Designs | Clause removed in favour of more detailed drawings in Penetration Flashing Design. |
0 - Clause Removed | 8.3.3 | 9.7.8 Penetration Flashing Installation | Clause removed in favour of more detailed drawings in "Penetration Flashing Design". |
0 - Clause Removed | 8.3.4 | 9.7.9 Laps | Clause removed, see 7.4 End Laps. |
0 - Clause Removed | 8.3.5 | 9.7.10 Details | Clause removed. See 9.4.2.5 Sheetmetal Flashings on Corrugated Profiles. |
0 - Clause Removed | 8.3.7 | 9.7.11 Type A Soaker | |
0 - Clause Removed | 8.3.8 | 9.7.12 Type B Watershed | Clause removed. New Details available. |
0 - Clause Removed | 8.3.9 | 9.7.13 Type C Tapered | Clause removed. New flashing details provided. |
0 - Clause Removed | 8.3.10 | 9.7.14 Type D Tray | Clause removed. New Flashing details provided elsewhere. |
2 - Editing and rearrangement | 8.3 | 8.3 Flashing Cover | Completely revised clause. Drawings updated for clarity. |
2 - Editing and rearrangement | 8.3 | 9.4 Penetration Design | Revised clause. |
2 - Editing and rearrangement | 8.4.1 | 9.5.2.1 Plant Room And Conduit Penetrations | Completely revised clause. |
2 - Editing and rearrangement | 8.4 | 8.2.1 Flashing Edges | Completely revised clause. Drawings updated. |
2 - Editing and rearrangement | 8.5.1 | 8.4.1 Ridge And Hip | Completely revised clause. |
2 - Editing and rearrangement | 8.5.3 | 8.4.3 Parapet Cappings | Completely revised clause. |
3 - Substantial change to recommendation | 8.5.4.2 | 8.4.4.2 Change Of Pitch | Completely revised clause. Drawings updated. |
0 - Clause Removed | 8.5 | 9.9 Dormer Junctions | Clause removed. |
4 - Clause Inserted | 8.7.3 | 8.6.3 Sealant Extrusion And Placement | Updated drawing: "Applying Sealant". |
4 - Clause Inserted | 8.8.2 | 8.7.2 Notched Edging | New Clause to follow "Soft Edging", under "Profile Closures". |
2 - Editing and rearrangement | 8.8 | 8.7 Profile Closures | Completely revised clause. |
4 - Clause Inserted | 8.9 | 8.8 Flashing Buckling | Inserted new clause. |
4 - Clause Inserted | 8.32 | 19.16 2018 – November | November Update Message added |
2 - Editing and rearrangement | 8 | 9 External Moisture Penetrations | Completely revised and renamed clause. |
4 - Clause Inserted | 9.3 | 9.2.1 Penetrations Safety | New sub-clause under "Additional Support". |
4 - Clause Inserted | 9.5.1 | 9.4 Penetration Positioning | New Clause. |
4 - Clause Inserted | 9.5.2 | 9.4.1 Sheetmetal Penetration Back Flashings | New Clause. |
4 - Clause Inserted | 9.5.3 | 9.4.1.1 Over-Flashed (Watershed) Back Flashings | New Clause |
4 - Clause Inserted | 9.5.4 | 9.4.1.2 Under-Soaker Back Flashings | New Clause |
4 - Clause Inserted | 9.5.5 | 9.4.2 Curb Design | New Level 2 Clause. |
4 - Clause Inserted | 9.5.5.1 | 9.4.2.1 Level Back Curbs | New level 3 Clause under 9.4.2 Curb Design. |
4 - Clause Inserted | 9.5.5.2 | 9.4.2.2 Arrowhead Back Curbs | New 3rd level clause under 9.4.2 Curb Design. |
4 - Clause Inserted | 9.5.5.3 | 9.4.2.3 Cricket Back Curbs | New level 3 Clause under 9.4.2 Curb Design. |
2 - Editing and rearrangement | 9.5.6 | 9.4.2.5 Sheetmetal Flashings on Corrugated Profiles | Revised and renamed clause. |
4 - Clause Inserted | 9.6.1 | 9.5.1 Boot Flashings to an Over Flashing | New Clause |
4 - Clause Inserted | 9.6.2 | 9.5.2 Other Applications for Boot Flashings | New Clause |
4 - Clause Inserted | 9.6.2.2 | 9.5.2.2 Mechanical Services | New clause |
2 - Editing and rearrangement | 9.6 | 9.5 Boot Flashings | Revised and renamed clause. |
4 - Clause Inserted | 9.7 | 9.5.3 Flush Penetrations | New clause |
2 - Editing and rearrangement | 16.7 | 17.7 Wind and Point Load Testing |
The NZ Metal Roof and Wall Cladding Code Practice (COP), has been updated effective 1 October 2018.
In this update there are Category 1 - Minor Errata corrections only, for spelling and grammar - no clauses have been substantially revised, nor any recommendations altered.
Category | Clause Number (at time of update) | Clause (As of current publication) | Details |
---|---|---|---|
1 - Minor Errata | 1.5.1 | 1.5.1 Mediation | 1. Inserted "a" before settlement. 2.Corrected spelling of "available" in the second paragraph. |
1 - Minor Errata | 2.1 | 2.1 Definitions | General tidy up; Fix spelling: Intersection, surface, heights, dewpoint, six-sided, practitioners, seashore, rainwater, coatings, trademark, components, electromagnetic, skylight, sawtooth, embedded, cross-section, violently, stop end, fibreglass, change. Changed: Low Pitched 15° to 10°, and Pitch Roof 15° to 10°. Remove some extra spaces. Removed some commas. Inserted comma. Changed "newton" to "Newton". Reworked Pop Rivet definition. Removed semi-colon. UPdated "boot Flashings. |
1 - Minor Errata | 3.5.6 | 3.5.6 Section Properties | Moved paragraph: "Symmetrical corrugate or trapezoidal profiles have the advantage of being more easily curved around a radius. Because the ribs are necessarily close together, they have the disadvantage of roof traffic loads having to be spread over two crests or along the purlin line, and they have a lower run-off capacity." |
1 - Minor Errata | 3.5.8 | 3.5.8 Continuity | Updated Drawing. Arrows were not displaying correctly. |
1 - Minor Errata | 3.6.1 | 3.6.1 Point Load | Removed empty paragraph spacing |
1 - Minor Errata | 4.9.3 | 4.8.3 Graffiti Removal | Fixed typo "Grafitti" |
1 - Minor Errata | 4.10.3 | 4.9.4 Compatibility Table | Inserted "online" in the description of the online interactive tool. |
1 - Minor Errata | 4.11.6 | 4.10.6 Capillary Action | Typo — Changed 80 to 8°. |
1 - Minor Errata | 4.11.8 | 4.10.8 Microcracking | Replaced drawings a through to e |
1 - Minor Errata | 5.7 | 5.7 Downpipes | Replaced drawing "Collecting Rainwater" |
1 - Minor Errata | 6 | 6 External Moisture Overview | Fixed typo: "conductionand" to "conduction and" |
1 - Minor Errata | 9.3.3 | 10.12.1 Cold Roofs | fixed typo: inserted " is ..." |
1 - Minor Errata | 9.5 | 10.11 Underlay | 1. Added new new photo – 9.5C Condensation on Synthetic Underlay. 2. Typo: corrected spelling of 9.5B "Condesation.." to "Condensation" |
1 - Minor Errata | 9.5.5 | 10.7.5 Non-Residential Buildings | Fixed typo: deleted extra "in" |
1 - Minor Errata | 10 | 11 Natural Light | Fixed typos: "thermal", "installation" and "available" |
1 - Minor Errata | 10.1 | 11.1 Clause G7 NZBC | Fixed typos: "through", "enough" |
1 - Minor Errata | 10.2 | 11.2 Natural Light Materials | Fixed typos: "a varying mass" and "square" |
1 - Minor Errata | 10.3 | 11.3 Types Of Roof Lights | Fixed typos: "single" and removed extra space after comma. |
1 - Minor Errata | 10.5 | 11.5 Weathering And Durability | Fixed typo: "not" |
1 - Minor Errata | 13.1.2 | 14.17 Turndowns (Drip Forming or Drip Edging) | changed "downturns" to "Turn-downs" and inserted "drip forming or drip edging" in the heading. |
1 - Minor Errata | 13.3.3 | 14.13.2 Screws | 1. Fixed typos: "hardwoods", 2. Fixed broken links" "Fastener Performance" and "Secret Fixing Clips" |
1 - Minor Errata | 13.5.3 | 14.5.3 Expansion Fixings | Fixed link: "favourable conditions for expansion" |
1 - Minor Errata | 14.1.5 | 15.1.5 Purlin Spacing | Fixed typo: "subjected", removed comma. |
1 - Minor Errata | 14.4.2.4 | 15.4.2.4 Types Of Joints | Removed unnecessary link: (See drawing 11.2.4) |
1 - Minor Errata | 16.1.3 | 17.1.3 Resistance for wind pressures | Replaced incorrect numbering reference (section 15.7) with correct link (Wind and Point Load Testing) |
1 - Minor Errata | 16.2 | 17.2 Background to Scope | Corrected heading "Commentary on 16.1" |
1 - Minor Errata | 16.4 | 17.4 Commentary On 16.3 | Corrected heading: "Commentary On 16.3" |
1 - Minor Errata | 16.9 | 17.9 Background to wind load testing | Corrected heading: "Commentary On Section 16.6" |