The successful introduction and commercial use of products designed to have controlled release of silver ion over long time periods prompted the Silver Research Consortium and the US Forest Products Laboratory to undertake research to see if silver could also be an effective wood preservative to be used in place of chromated copper arsenate (CCA) now prohibited for use in the United States and elsewhere for treated wood manufactured for consumer uses such as decks, playground equipment, and picnic tables. Commercial silver-based biocide formulations and silver chemicals were evaluated in soil and water environments and for effectiveness against wood rotting fungi and termites. Initial experimental results show that aqueous commercial silver-based biocides at levels of 200 parts per million by weight of silver per weight of wood provide effective protection without damage to soil or water environments.

Download document (27 kb)
free for the members of IRG. Available if purchased.

Purchase this document