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Compatibility Table

The compatibility table should be regarded as indicative only due to the many permutations of the environment, the amount of moisture present, and the relative size of the components.

The indicator “use with caution in moderate environments” should be interpreted as a warning that it could be unsuitable when there is a risk of continued moisture or other contaminants.

 

Interactive Material Compatibility Tool

This online tool interactively provides an interpretation of the information in the Material Compatibility Table. Simply select the two materials in use to view compatibility.

The Code of Practice Online provides an interactive tool to interpret of the information in the Material Compatibility Table, by simply selecting the two materials in use to view compatibility. This tool is only available online at www.metalroofing.org.nz/cop/durability/compatibility#compatibility-table...

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Material Compatibility Table

Material water flows from
Aluminium
prepainted aluminium
AZ Coated Steel
zinc
Galvanised steel
Painted Galvanised Steel
Pre-Painted Steel
Copper/brass
Stainless steel
Lead
Plastic/glass
concrete/plaster
Wet timber
Cedar
Butyl rubber
AluminiumContactYYYYYYYNCNYNNNC
 Run ontoYYYNNYYYYYYYYYY
prepainted aluminiumContactYYYYYYYNNNYNNNN
 Run ontoYYYNNYYYYYYYYYY
AZ Coated SteelContactYYYYYYYNNNYNNNN
 Run ontoYYYNNYYYYYYYYYY
ZincContactYYYYYYYNCYYCNNN
 Run ontoYYYYYYYYYYYYYYY
Galvanised steelContactYYYYYYYNCYYYNNN
 Run ontoYYYYYYYYYYYYYYY
Painted Galvanised SteelContactYYYYYYYNNNYNNNN
 Run ontoYYYNNYYYYYYYYYY
Pre-Painted SteelContactYYYYYYYNNNYNNNN
 Run ontoYYYNNYYYYYYYYYY
Copper/brass*ContactNNNNNNNYYCYCYYY
 Run ontoNNNNNNNYYCYYYYY
Stainless steelContactCNNCCNNYYYYYYYY
 Run ontoYYYNNYYYYYYYYYY
Lead*ContactNNNYYNNCYYYYNYY
 Run ontoCNNYYNNYYYNCYYY
Plastic/glassContactYYYCCYYYYYYCYYY
 Run ontoYYYNNYYYYYYYYYY
Concrete/plasterContactNNNCCNNCYYYYYYY
 Run ontoNCNYYNNYYYYYYYY
Wet timberContactNNNNNNNCCNYYYYY
 Run ontoYYYYYYYYYYYYYYY
Steel*ContactCNCNNCCNNCYCNNY
 Run ontoYYYYYYYYYYYYYYY
Cedar*ContactNNNNNNNYYYYYYYY
 Run ontoYYCCCYYYYYYYYYY
Butyl rubberContactCNNNNNNYYYYYYYY
 Run ontoCCNNNCCYYYYYYYY
 

 

Material Compatibility Key

YSuitable
NNot suitable
CMay need separation. Use with caution in severe or moist environments
*May cause staining, but not corrosion
Note:
  • Runoff and contact effects may vary according to the relative size/area of the two materials.
  • Most incompatible materials will not react if moisture can be eliminated from area of contact.
  • Use with caution - may mean separation required, or unsuitable in severe environments, or when in wet contact.
  • Wet concrete includes uncured concrete, fibre-cement, or within plaster walls.
  • Dry concrete includes cured concrete not exposed to rain.
 

 

 

Clause: 
004_009_004_000_000_000_000_000_000
Clause Number: 
4.9.4
4.10.3
/cop/durability/compatibility#compatibility-table
Revision Category: 
1 - Minor Errata
Revision Detail: 

Minor revision for layout, style, grammar, and clarity. No changes to recommendations.

Draft Clause: 
004_010_003_000_000_000_000_000_000