Abstract: A method of treating a surface of wood products to inhibit the uptake of moisture into the wood by providing an aqueous formulation comprising polyethylene-vinyl acetate in water, 2-99 percent polyethylene-vinyl acetate by weight. The aqueous formulation is applied to the surface of wood products, wherein the wood products remain outdoors or in a damp environment having 60% or greater relative humidity. The aqueous formulation is allowed to dry and form a micro-film on the surface of the wood products. The moisture content in the wood products is maintained at 16 percent or less. A pesticide effect on the surface of the wood products is produced, inhibiting infestation of the wood products by insects.

Abstract: This invention provides method of treating a surface of exterior wood outside of buildings to inhibit the uptake of moisture into the wood by spraying on the surface of the wood an aqueous formulation consisting of one or more film forming non-chloride, long-chain polymers. The aqueous formulation forms a clear micro-film. Preferably, the long-chain polymer is polyethylene-vinyl acetate, polyurethane, or a combination thereof, wherein the clear micro-film contains no detectable volatile organic compounds. A clear colorant is added to the aqueous formulation to verify treatment. The clear colored micro-film maintains moisture content in the wood at 16 percent or less, allows for continued visual inspection of the surface of the wood for termite damage, does not rub off, get diluted with water, or become damaged by workers and pets who come into contact with the clear colored microfilm.