Pressure-Treated Lumber for Decks (ACQ Copper Azole, CCA Legacy, Soil Leaching) — outdoor safety profile
Low riskCCA (chromated copper arsenate) banned for residential 2004, but millions of pre-2004 decks remain.
What is this product?
CCA (chromated copper arsenate) banned for residential 2004, but millions of pre-2004 decks remain. Arsenic leaches to surface and transfers to hands. ACQ/CA-B replacement: copper-based, no arsenic — but copper leaches into soil and corrodes standard fasteners. Sealant every 1-2 years reduces CCA arsenic by 90%. NEVER burn CCA wood — ash is highly toxic.
What's in it
Click any compound name for its full safety profile, regulatory consensus, and exposure data.
Preserved In Cca Wood
Frequently asked questions
No FAQs generated.
Look up Pressure-Treated Lumber for Decks (ACQ Copper Azole, CCA Legacy, Soil Leaching) in the outdoor app
Search by ingredient, browse by category, or compare to alternatives in the live app.
Open in outdoor View raw API dataReference data, not professional advice. Aggregates publicly available regulatory and scientific information. Why we built ALETHEIA →