Copper Azole Treated Wood Safety

Is acq and ca pressure treated lumber safe.

Copper azole treated wood safety.

Pressure treated wood has gone through a process that uses high pressure to force a solution of water and preservative agents deep into the lumber to help extend its useful lifespan. Manufacturers are confident of course that these treatments pose no health or environmental problems. The copper deters insects and the fungicide prevents soil rotting the lumber. However some preservative may migrate from the preserved wood into surrounding soil over time and there may be incidental contact with skin during construction or use.

Studies have shown that arsenic from wood treated with cca leaches into the soil and that copper although much less toxic leaches from acq and copper boron azole cba a variant of ca b. Material safety information copper azole treated wood products page. 3 of 4 date of issue. Copper azole and alkaline copper quaternary treatments both contain a fungicide.

Follow the safe practices listed below when working with pressure treated wood. Follow the safe practices listed below when working with pressure treated wood. However some preservative may migrate from the pressure treated wood into surrounding soil over time and there may be incidental contact with skin during construction or use. Copper azole preservative penetrates into and remains in pressure treated wood for a long time.

Micronized copper azole penetrates into and remains in pressure treated wood for a long time.