VM ZINC® BASICS
Support and compatibility: Zinc and Wood supports

The compatibility of the wood with VM ZINC® must be analysed before prescribing and fitting.

VM ZINC® on a wooden load-bearing structure

Wood varieties that may or may not be placed in contact with VM ZINC®

Compatible varieties	Incompatible varieties
Fir (red or white)	Larch
Spruce	Oak
Pine	Chestnut
Poplar	Red or white cedar
	Douglas pine
	All wood varieties with a pH <5

Compatibility of wood treatment products with VM ZINC®
If the wood is treated, the compatibility of the treatment products with VM ZINC® must be checked (see table below).

*Table of wood treatment products always refer to the manufacturer's notice for product use**
Type of treatment	Components	Compatibility with VM ZINC® * always refer to the manufacturer's notice for product use	Class
Non-fixing metal salts	Single component salts used in water (fluorine, boron or copper)	NO	C1
Metal fixing salts	Complex metal salts containing chromium to fix the active metals (CCA, CCB)	Study in progress (consult manufacturer)	C1 to C5
Organic products	Contain oil solvents	YES	C1 to C3
Emulsions	Use water as a vehicle combined with non-hydrosoluble synthetic substances	YES	C1 to C2
Mixed products	Combined metal compounds (copper and boron) with synthetic molecules	To be determined (consult manufacturer)	C1 to C4
Creosote	Compound of active substances produced from hard coal distillation	To be determined (consult manufacturer)	C4

VM ZINC® PLUS, a VM ZINC® titanium zinc with a protected underside and tested according to ASTM 968, is intended for solid wood or reconstituted panels, the compatibility of which is compromised by the accumulated effects of humidity and the type of treatment.
When installing VM ZINC® plus be sure to add a slip sheet between the support and the zinc to avoid abrasion of the coating against the wood support.

Use of wood above VM ZINC®

Incompatible wood varieties may not be used above VM ZINC® elements (e.g. weather-boarding with incompatible boards or panels above the VM ZINC®). Incompatible timber wash, treatment products or tanic acids will quickly attack the zinc and cause the formation of unattractive stains.

Support and compatibility

Zinc and Wood supports

Compatibility with other material and other metals

VM ZINC® BASICS Support and compatibility: Zinc and Wood supports

VM ZINC® on a wooden load-bearing structure

Use of wood above VM ZINC®

VM ZINC® BASICS
Support and compatibility: Zinc and Wood supports