Treated lumber is the time-tested choice for outdoor decks. It's pressure-treated with advanced wood preservatives to resist rot, fungal decay, termites, and the elements, so your deck stays strong season after season. At 84 Lumber, we carry treated decking products powered by Koppers' industry-leading wood enhancement technology, backed by proven science and an unwavering commitment to safety and environmental responsibility.
With a wide range of deck sizes, free design plans, and our reliable same-day delivery fleet, getting your dream deck off the ground has never been easier.
Expand your outdoor space.
Add ambience.
Value that lasts.
Treated Lumber
Koppers is a world-leading developer of the most progressive wood preservative and enhancement products, to meet the most demanding construction and infrastructure industries.
- Termites
- Rot
- Fungal decay
- Fire
- And more
Available Sizes:
- 8' x 6'
- 10' x 6'
- 12' x 8'
- 14' x 8'
- 16' x 8'
- 8' x 8'
- 10' x 8'
- 12' x 10'
- 14' x 10'
- 16' x 10'
- 10' x 10'
- 12' x 12'
- 14' x 12'
- 16' x 12'
Koppers is safety-focused, environmentally responsible, and backed by proven science. Their products offer the most effective means of preserving and enhancing both beauty and performance.
Pressure Treated lumber is used in:
- Decking
- Fencing
- Utility poles
- Construction lumber
- Vineyard stake applications
- Commercial building
- Heavy duty marine applications
- Agricultural use