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v24.09 September 2024

The latest changes to the NZMRM Metal Roof and Wall Cladding Code of Practice; published on 1 September 2024.

Category 3: Substantial Changes to Recommendations.

  • Ridge And Hip
    Changed the requirement for butyl membranes, underlay, or soft flashing for weathertightness to a recommendation as a secondary method in addition to good design and installation.
  • Spouting Support Systems
    Clarifying recommendation: brackets for pre-painted spouting in marine conditions must be appropriately painted or powder-coated before installation, or non-ferrous metals should be used.

Category 2: Editing and Rearrangement

  • Flashing Laps
    Clarified the recommendation for unsealed laps to have a minimum of 150 mm cover and sealed laps a minimum of 100 mm.
  • Rafter, Hip and Rise Chart
    Added options for pitches steeper than 60°.

Revision Detail v24.09 - 2024 -September

CategoryClause Number (prior to update)Clause (As of current publication)Details
2 - Editing and rearrangement1Introduction Updated Revisions Message
1 - Minor Errata4.3Metal Performance Minor revision to improve clarity, conciseness, style, or layout. No changes to recommendations.
1 - Minor Errata4.6Environmental Categories Minor revision for style, grammar, and clarity. No changes to recommendations.
1 - Minor Errata4.10.3Solar Collectors and Other Roof Mounted Structures Resizing of photos for consistency. No changes to recommendations.
1 - Minor Errata4.10.6Capillary Action Minor edit for style, grammar, clarity, or consistency. No changes to recommendations.
1 - Minor Errata4.14Swarf Staining and Cut Edge Corrosion Resized photos for consistency and layout. No changes to recommendations.  
1 - Minor Errata4.15Clearances Illustration reformatting. No changes to recommendations.
1 - Minor Errata4.15.1Ground Clearance Illustration reformatting. No changes to recommendations.
1 - Minor Errata4.18.2Post-Painted Factory Applied finish Minor edit to improve clarity, conciseness, style, or layout. No changes to recommendations.
2 - Editing and rearrangement5.4.2.3Spouting Support Systems Editing to clarify the requirement for pre-painting spouting brackets.
1 - Minor Errata8.4Flashing Cover Fixed typo. changed "m" to "mm".
2 - Editing and rearrangement8.4.4Flashing Laps Clarified the recommendation for unsealed laps to have a minimum of 150 mm cover and sealed laps a minimum of 100 mm.
3 - Substantial change to recommendation8.5.1Ridge And Hip Intersections
  • Renamed clause to Ridge and Hip Intersections.
  • Changed the requirement for butyl membranes, underlay, or soft flashing for weathertightness to a recommendation as a secondary method in addition to good design and installation.
1 - Minor Errata15.1.6Durability Fixed the spelling of soffit. No changes to recommendations.
2 - Editing and rearrangement18.2Pitch & Rise Calculator Added pitches to the table above 60°
4 - Clause Inserted v24.09 – September 2024 A new clause providing details of the updates published on 1 September 2024.
 
Clause: 
019_002_000_000_000_000_000_000_000
Clause Number: 
19.2
/cop/revision-history/v2409-september-2024
Revision Category: 
4 - Clause Inserted
Revision Detail: 

New clause providing details of the updates published on 1 September 2024.