Liquid boron preservative process

A process for the preservative or remedial treatment of wood or wood based products with a liquid boron based preservative formed by mixing boric acid or boron oxide with one or more solvents selected from the group consisting of methanol and ethanol without removing any reaction byproducts from the mixture, consisting essentially of the steps of drying the wood or wood based product to a mean moisture content below 15% by weight to an extent sufficient to allow penetration of the preservative into the wood or wood based product and subsequently contacting the wood or wood based product with the liquid boron based preservative, whereby an amount of boron or a compound of boron becomes deposited within the wood or wood based product.

A process for the preservative or remedial treatment of timber, consisting essentially of spraying the timber with a liquid boron based preservative formulation formed by mixing boric acid or boron oxide with one or more solvents selected from the group consisting of methanol and ethanol without removing any reaction byproducts from the mixture, after first drying the timber to a mean moisture content below 15% by weight to an extent sufficient to allow rapid penetration of the preservative into the timber, whereby boron or a compound of boron becomes deposited within the timber.