Compatibility with Other Materials
When placed in contact with zinc, certain products can have detrimental effects on the appearance and/or structural integrity of the zinc.
Important Considerations
Acidic products and products that can generate a galvanic reaction must not be used with zinc.
Run-off from non compatible products onto zinc also must be avoided. In general, products with a ph lower than 5 and higher than 7 are not compatible with zinc.
There are no issues with zinc in combination with metals other than copper and mild steel. When zinc is in contact with copper in the presence of an electrolyte (such as water) a galvanic reaction will lead to corrosion of the zinc and subsequent failure of the roof or wall cladding.
Run-off from a copper surface to a zinc surface must be avoided under all circumstances. Zinc in contact with mild (carbon) steel is not desirable either, due to similar electron transfers between the metal that will result in zinc corrosion and deterioration.
Zinc can be installed adjacent to limestone. The run-off from limestone onto zinc material is acceptable. However, limestone dust and gypsum dust generated during cutting operations can react with zinc in the presence of water and form a superficial layer of white rust. No dust should be in contact with unprotected zinc. To prevent white rust, good construction practices should be used to limit the amount of dust that comes in contact with the zinc.
| Compatible Woods | Incompatible Woods |
|---|---|
| Pine | Larch |
| Spruce | Oak |
| Scots pine | Chestnut |
| Poplar | Red Cedar |
| Douglas fir | |
| White cedar | |
| All woods with a ph < 5 |
| Compatible metals | Incompatible metals |
|---|---|
| Lead | Copper |
| Aluminium (painted, anodised or bare) | Steel (Non galvanised) |
| Galvanised Steel | Gypsum dust/limestone dust |
| Stainless Steel |
| Compatible miscellaneous materials | Incompatible miscellaneous materials |
|---|---|
| Polyurethanes | Mortar |
| Non-acetic silicones | Building paper |
| MS Polymer mastics | Bituminous membranes |
| Organic timber treatments | Fire retardant & preservative treatments |
| Acidic cleaners (brick cleaner etc) | |
| Acetic silicones | |
| Metal salt timber treatments | |
| * This list is not exhaustive |
Surface Finishes
VMZINC is an elegant partner for many building materials. Available in 10 pre-weathered finishes as well as mill finish Natural Zinc. Highly flexible, malleable and durable. Zinc can be embossed, perforated and incorporate texture helping to create imaginative designs.
Design Assistance
Our team are here to assist clients to design their roofing and façade project, providing innovative solutions that respect budgetary requirements whilst helping meet industry standards.