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How to Recycle Wood/Lumber
Check local acceptanceReusable hardwood and long clear boards can sell. Grind stock is usually a tip fee or low-value commodity. Treated wood is typically a disposal cost only.Last reviewed July 31, 2026
Quick answer
Clean untreated C&D lumber can go to grind, biomass, or salvage. Pressure-treated and CCA wood is never mulch and never burned. For deeper treated-wood and pallet rules, see the Wood category. Before you go, confirm that a local recycling center accepts the material in its current condition.
- Recycling route
- Check locally
- Typical value
- Reusable hardwood and long clear boards can sell. Grind stock is usually a tip fee or low-value commodity. Treated wood is typically a disposal cost only.
- Donate / take-back
- Available
Dimensional lumber, framing, plywood, and wood debris from building and demolition. EPA estimated about 40.8 million tons of C&D wood products in 2018. Landfill was the primary national destination; clean untreated wood has grind and reclaim markets where processors exist.
Where to Recycle
- C&D recyclers with wood grind lines
- Mulch and biomass processors (clean untreated only)
- Architectural salvage and lumber reclaim yards
- Habitat for Humanity ReStore for usable boards
- Municipal transfer stations (treated wood often landfill-only)
How to Prepare
- 1Separate untreated framing from pressure-treated, painted, and creosote wood.
- 2Pull large metal hardware when a buyer wants clean grind stock.
- 3Keep dirt, drywall, and plastic out of wood piles.
- 4Set aside reusable long boards for salvage or Habitat ReStore.
- 5Leave end tags on treated lumber when present so disposal sites know the chemical.
- 6Do not chip treated wood for home mulch or compost.
Special Instructions
Never burn pressure-treated wood. Smoke and ash can carry arsenic, copper, chromium, or other preservatives. CCA-treated lumber sold for most residential uses was phased out after 2003, but older decks and structures still contain it. NPIC and EPA advise against home burning or mulching unknown treated stock. Painted, glued (OSB/MDF), and lead-contaminated wood belong out of clean untreated grind. Full treated-wood and MSW pallet detail: /materials/wood.
Environmental Impact
EPA 2018: about 40.8 million tons of C&D wood generated; about 29.6 million tons landfilled and about 11.2 million tons next use (fuel about 7.5, compost/mulch about 2.5, manufactured about 1.2). Do not mix MSW wood recycling rates with this C&D stream. Treated wood that enters mulch or burn piles spreads preservatives.
Sustainable Alternatives
- Deconstruct and reuse dimensional lumber
- Donate surplus new lumber to Habitat ReStore
- Sell or give away reclaimed boards through salvage yards
- See /materials/wood for pallet, furniture, and treated-wood depth
Official guidance and resources
Accepted items and drop-off rules can vary by location. Check the destination before you go.
What’s Accepted
Accepted
- Clean untreated framing lumber and plywood offcuts
- Pallets and crates when free of chemical treatment
- Reclaimed beams and boards suitable for reuse
- Untreated fence and deck boards (confirm no preservative)
Not Accepted
- Pressure-treated, CCA, creosote, or railroad-tie wood in mulch streams
- Painted or lead-painted wood without testing
- Wood mixed with drywall, concrete, or trash
- Railroad ties and marine pilings in standard C&D wood recycling
Donation & Take‑Back Options
Estimated value: Reusable hardwood and long clear boards can sell. Grind stock is usually a tip fee or low-value commodity. Treated wood is typically a disposal cost only.
Hazardous Components
- Arsenic, chromium, and copper in CCA and some older treatments
- Creosote on industrial and railroad ties
- Lead paint on pre-1978 painted wood
- Asbestos possible in older siding and adhesives attached to wood
FAQs
How do I recognize pressure-treated wood?
Look for end tags naming the preservative and use category. Greenish tint, incising marks, and outdoor deck or ground-contact use are clues. When tags are gone, treat unknown exterior lumber as treated and keep it out of mulch.
Can treated wood go in a landfill?
Federal rules generally do not list household treated wood as hazardous waste, but states differ. Many transfer stations accept it as regular C&D trash. Never burn it and never mulch it. Ask your local solid-waste district for the rule that applies.
Is C&D wood mostly mulched?
No. EPA 2018 shows landfill as the primary destination. Of the smaller next-use share, fuel outweighed compost/mulch. Clean untreated loads still have the best chance at grind or salvage markets.
Are OSB, MDF, and particleboard recyclable?
Glued products are harder to recycle than solid lumber. Some grinders reject them or limit them. Ask the yard before you haul a trailer of sheet goods.
Where is deeper wood guidance?
Use this page for C&D framing and demolition wood. For MSW pallets, furniture, and full treated-wood rules, see /materials/wood so you do not mix those rates with C&D figures.
Can I compost construction wood at home?
Not treated wood, and not painted wood. Even clean dimensional lumber is slow to break down and better suited to a commercial mulch or biomass outlet than a backyard pile.
Related recycling guides
- How to recycle Construction and Demolition Debris
- How to recycle Untreated Scrap Wood
- How to recycle Wood Pallets
- How to recycle Hardwood Flooring
- How to recycle Asphalt Shingles
- How to recycle Drywall
- How to recycle Metal Roofing
- How to recycle Concrete
- How to recycle Insulation
- How to recycle Pressure-Treated Wood
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