Can I burn pressure-treated wood scrap in Vancouver?

No, you should never burn pressure-treated lumber in Vancouver or anywhere else. Burning pressure-treated wood releases toxic chemicals that are dangerous to breathe and harmful to the environment.

Why Pressure-Treated Wood is Dangerous to Burn

Pressure-treated lumber used in deck construction is treated with ACQ (alkaline copper quaternary) or similar copper-based preservatives to resist rot and insects. When burned, these chemicals release toxic fumes including copper compounds and other harmful substances. Inhaling these fumes can cause respiratory irritation, and the ash contains concentrated toxins that contaminate soil and water.

Older pressure-treated lumber (pre-2004) was treated with CCA (chromated copper arsenate), which contains arsenic. Burning CCA-treated wood releases arsenic compounds that are carcinogenic and extremely dangerous. Even small amounts of this ash are hazardous to humans, pets, and the environment.

Vancouver Fire Regulations and Disposal Options

The City of Vancouver and all Metro Vancouver municipalities prohibit burning pressure-treated wood in backyard fires, fire pits, or fireplaces. This applies to all treated lumber scraps from deck projects, regardless of how small the pieces are.

Proper disposal options for pressure-treated wood scraps in Metro Vancouver:

• Municipal transfer stations accept pressure-treated lumber for proper disposal. Vancouver residents can take small amounts to the Vancouver South Transfer Station or Arbutus Ridge Landfill
• Construction waste disposal companies will pick up larger quantities of treated lumber from deck demolition or construction projects
• Some lumber yards accept clean pressure-treated wood scraps for recycling into new treated products
• Never put treated lumber in regular garbage - it requires special handling due to the chemical content

If you're disposing of deck materials, untreated cedar scraps can be burned safely in approved fire pits or fireplaces, following Vancouver's fire regulations and air quality advisories. Cedar burns cleanly and produces pleasant-smelling smoke. However, always check current fire restrictions - Metro Vancouver issues burning bans during dry periods, typically in summer and early fall.

For safe disposal of all deck construction waste, contact your local municipality or a licensed waste disposal company rather than attempting to burn any treated materials.