Arsenic in Pressure-Treated Lumber - Enhancing Childrens Cancer Risks

While CCA manufacturers and the Environmental Protection Agency (EPA) had already agreed to phase out CCA treatment of wood for most consumer uses by the end of 2003 there are however many installations of such wooden structures existing. About 70% of existing U.S. single-family homes and 14% of public playgrounds incorporate CCA-treated wood.

 

For homeowners and others who want to reduce their potential arsenic exposure from their decks or other CCA-treated wood structures, new studies show that use, at least once a year, of an oil-or water-based, penetrating sealant or stain can reduce arsenic migrating from the treated wood. The data show that oil- or water-based sealants or stains that can penetrate wood surfaces are preferable to products such as paint, because paints and other film-formers can chip or flake, requiring scraping or sanding for removal, which can increase exposure to arsenic. Consumers should consider the required preparation steps (e.g., sanding, power washing, etc.) before selecting a product to minimize potential exposure to arsenic, both for initial application and re-coating.

 

 

Related Studies

 

 Related News