COP v3.0:revision-history; 2018-november

19.4 2018 – November 

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

Summary of Changes in this Update

  • 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.

  •  Other updates consist of Category 1 – minor errata corrections to spelling, and grammar and layout.

19.4A

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 4.11.8 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 6.2.1 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 8.3.1 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: 7.4A 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 Completely revised and renamed clause.
0 - Clause Removed 8.2.3 9.5 Corrosion Incorporated into "9.3 Penetration Durability".
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 8.3.2 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 19.4 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