Compatibility rules

  • Zinc in relation with timber

    A low or non-acid solid, natural and non treated timber deck, that is, with a pH of between 5 and 7 is compatible with zinc and can be used as a direct support.

  • Zinc in relation with other metals

    Contact between zinc and other metals must take into account the electro-chemical reactions caused by a difference in electrical potential between the surfaces of the metals. Therefore a certain number of contacts are acceptable whilst others must be avoided.


Compatible timber Incompatible timber
Pine Larch
Spruce Oak
Scots pine Chestnut
Poplar Red cedar
  Douglas fir
  White cedar
  Gum tree


Compatible metals Incompatible metals
Lead Copper
Aluminium Steel (Non galvanised)
Galvanised Steel  


Table of glues and mastics
Compatible products * Incompatible products *
Polyurethanes Acetic silicones
Non-acetic silicones Acid epoxides
MS Polymers Ureas / melanin / phenol-formaldehyde (wood or panel gluing)
  Acrylics (depending on the reagent used)
* always refer to the manufacturer's notice


Table of wood treatment products *
Type of treatment Components Compatibility with VMZINC * 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
* always refer to the manufacturer's notice for product use