Copper Azone

• Pressure-treated Wood

  Pressure-treated Wood - Arsenic and Old Decks

  Pressure-treated wood impregnated with chromated copper arsenate (CCA) - often with a greenish tint - was widely used for decks and porches prior to its being discontinued for residential use in 2003-2004. Since treated wood has a long lifespan, there is still plenty of CCA pressure-treated wood surrounding residences, prompting caution due to its arsenic content.