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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 for “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 interpretation 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
pre-painted aluminium
AZ coated steel
zinc or zinc coated steel
pre-painted AZ steel
Copper/brass
Stainless steel
Lead
Plastic/glass
concrete/plaster wet
concrete/plaster dry
Wet timber
Cedar
Butyl rubber
AluminiumContactYYYYYNCNYNCNNC
 Run ontoYYYNYYYYYYYYYY
pre-painted aluminiumContactYYYYYNNNYNCNNN
 Run ontoYYYNYYYYYYYYYY
AZ coated steelContactYYYYYNNNYNCNNN
Zincalume ®Run ontoYYYNYYYYYYYYYY
Zinc or Zinc coated steelContactYYYYYNCYYYYNNN
(galvanised - Z)Run ontoYYYYYYYYYYYYYY
pre-painted AZ steelContactYYYYYNNNYNYNNN
 Run ontoYYYNYYYYYYYYYY
Copper/brass*ContactNNNNNYYCYCYYYY
 Run ontoNNNNNYYCYYYYYY
Stainless steelContactCNNCNYYYYYYYYY
 Run ontoYYYYYYYYYYYYYY
Lead*ContactNNNYNCYYYYYNYY
 Run ontoCNNYNYYYNCCYYY
Plastic/glassContactYYYCYYYYYCYYYY
 Run ontoYYYNYYYYYYYYYY
Concrete/plaster wet*ContactNNNCNCYYYYYYYY
 Run ontoNCNYNYYYYYYYYY
Concrete/plaster dryContactCYYYYYYYYYYYYY
 Run ontoCYYYYYYYYYYYYY
Wet timberContactNNNNNCCNYYYYYY
 Run ontoYYYYYYYYYYYYYY
Steel*ContactCNCNCNNCYCYNNY
 Run ontoYYYYYYYYYYYYYY
Cedar*ContactNNNNNYYYYYYYYY
 Run ontoYYCCYYYYYYYYYY
Butyl rubberContactCNNNNYYYYYYYYY
 Run ontoCCNNCYYYYYYYYY
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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.
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/cop/durability/compatibility#compatibility-table
Revision Category: 
2 - Editing and rearrangement
Revision Detail: 

The clause was split for ease of use.

Draft Clause: 
004_010_003_000_000_000_000_000_000