Copper naphthenate

Color: Wood freshly treated with copper naphthenate ranges from olive to dark green or brown depending on the wood species and the treating process. Copper naphthenate treated wood loses its green tint after several months of exposure to sunlight.

Use Site Precautions

Logs treated with copper naphthenate should not be used for interior use in log homes. Wood treated with copper naphthenate should not be used where it will be in frequent or prolonged contact with bare skin (for example, chairs and other outdoor furniture), unless an effective sealer has been applied. Copper naphthenate-treated wood should not be used in residential, industrial or commercial interiors except for laminated beams or for building components which are in ground contact and are subject to decay or insect infestation and where two coats of an appropriate sealer is applied. Sealers may be applied at the installation site. In interiors of farm buildings where domestic animals or livestock are unlikely to crib (bite) or lick the wood, copper naphthenate-treated wood may be used for building components where two coats of an appropriate sealer is applied. Sealers may be applied at the installation site. Wood treated with copper naphthenate is not suitable for food garden uses. You may use copper naphthenate-treated wood for farrowing or brooding facilities, and in the presence of bees and hives. Do not use treated wood under circumstances where the preservative may become a component of food or animal feed, except in beehive applications. Examples of such sites would be structures or containers for storing silage or food. Do not use treated wood for cutting-boards or countertops. Only treated wood that is visibly clean and free of surface residue should be used for patios, decks and walkways. Do not use treated wood for construction of those portions of beehives, which may come in contact with the honey. Copper naphthenate-treated wood should not be used where it may come in direct or indirect contact with public drinking water, except for uses involving incidental contact such as docks and bridges. Do not use copper naphthenate-treated wood where it may come into direct or indirect contact with drinking water for domestic animals or livestock, except for uses involving incidental contact such as docks and bridges.