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 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).
19.7A Revision Detail - 2021 - June
| 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 | 5.3.2.3 Allowance for Short-Term Intensities | Updated Short-term Intensity Factor Explanation. |
| 1 - Minor Errata | 5.4.2 | 5.5.2 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 | 19.7 2021 – June | Revision message for the update on 1 June 2021. |