COP v3.0:revision-history; 2021-december

19.4 2021 – December 

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.

19.4A Revision Detail - 2021 - December

CategoryClause Number (at time of update)Clause (As of current publication)Details
3 - Substantial change to recommendation3.17.13.17.1 Corrugated Steel – 0.40Drawing edited to change C2 recommendation to stay below Very High.
3 - Substantial change to recommendation3.17.23.17.2 Corrugated Steel – 0.55Changed recommendation for C2, to only be used below Very High Wind Zones.
3 - Substantial change to recommendation4.10.34.10.3 Solar Collectors and Other Roof Mounted StructuresClause has been completely revised.
3 - Substantial change to recommendation8.88.8 Flashing BucklingChanged recommended minimum moisture content to 12% following advice from Scion .
3 - Substantial change to recommendation12.112.1 Roof NoiseThis 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 NoiseNew clause, raised and revised from former sub-sub clause of Roof Noise.
4 - Clause Inserted 12.1.2 Precipitation NoiseNewly created clause from the revised Roof Noise.
4 - Clause Inserted 12.1.3 Thermal NoiseNew clause, information elevated from the revised Roof Noise.
4 - Clause Inserted 19.4 2021 – DecemberRevision message for the 1 December 2021 Update.
2 - Editing and rearrangement11 IntroductionUpdate Revisions Message
2 - Editing and rearrangement5.3.75.3.7 Gutter Capacity CalculatorAll calculators now require input of both 50 year and 10 year ARI.
2 - Editing and rearrangement5.4.75.4.7 Valley Capacity CalculatorAll calculators now require input of both 50 year and 10 year ARI.
2 - Editing and rearrangement5.6.35.6.3 Downpipe Capacity CalculatorAll calculators now require input of both 50 year and 10 year ARI.
2 - Editing and rearrangement5.7.15.7.1 Maximum Area Above Spreader CalculatorAll calculators now require input of both 50 year and 10 year ARI.
2 - Editing and rearrangement7.1.47.1.4 Maximum Run CalculatorAll calculators now require input of both 50 year and 10 year ARI.
2 - Editing and rearrangement9.4.49.4.4 Maximum Area Above Penetration CalculatorAll calculators now require input of both 50 year and 10 year ARI.
1 - Minor Errata1.31.3 Standards and Related DocumentsFixed column spacing.
1 - Minor Errata2.12.1 DefinitionsClarified definitions for tray, trough, standing seam, and secret fixed profiles.
1 - Minor Errata3.6.23.6.2 Roof TrafficChanged "trademan" to trades people for gender neutrality.
1 - Minor Errata3.183.18 G550 Steel Cladding Fastening Pattern TablesFixed grammar for consistency. Fixed drawings to show C2 fastening pattern.
2 - Editing and rearrangement4.6.24.6.2 Environmental GuidesEnvrinmental guides redone for improved display on all browers.
1 - Minor Errata15.115.1 Curved RoofsGrammar fix.
1 - Minor Errata16.816.8 Overpaintingslight formatting change for improved reading.