Built to last. Treated to protect.

What Is Pressure-Treated Lumber?

Our pressure-treated lumber is engineered to resist rot, decay, and insect damage so your projects stay strong and dependable, season after season. Using a specialized pressure-treatment process, protective preservatives are driven deep into the wood fibers to strengthen the lumber and extend its lifespan. The result is reliable, long-lasting performance you can count on for any outdoor build.

Built for a Wide Range of Applications

Decks & Patios

Create durable outdoor living spaces designed to perform year after year.

Fencing

Designed to stay straight and secure through changing seasons.

Docks & Marine Use

Designed for high-moisture environments and waterfront durability.

Outdoor Structures

Ideal for pergolas, retaining walls, playsets, and more.

Above Ground vs Ground Contact

Above Ground

Best for: Fence boards, railings, lattice, high-level deck boards

Use when:

  • Wood is not in contact with soil
  • Minimal moisture exposure

Ground Contact

Best for: Post supports, ground-level walkways, retaining walls, planter boxes, stair stringers, raised garden beds, floating docks

Use when: 

  • Wood touches the ground or sits on concrete surfaces
  • High moisture areas
  • Structural applications

 

Pressure-Treated Lumber, Always In Stock!

Treated Dimensional Lumber

2×4 – 8' to 16'
2×6 – 8' to 20'
2×8 – 8' to 20'
2×10 – 8' to 20'
2×12 – 8' to 20'

Treated Timbers

4x4 - 8' to 12'
4x6 - 8' to 16'
6x6 - 8' to 24'
6x8 - 8' to 16'
8x8 - 8' to 16'

Rough Sawn Treated Timbers

6×6 – 8'
6×8 – 8'

Treated Boards

1x4 - 8',12',16' Treated #3
1x6 - 6' DE Fence Treated (3/4") Smooth
1x6 - 6' Dog Ear Fence Treated
1x6 - 8' .40 Treated Pine
1x6 - 12', 16' Treated #3
1x8 - 12' Treated #3

Treated Plywood

1/2" 4x8 Treated CCX
3/4" 4x8 Treated CCX

Stair Stringers

3 Step
4 Step
5 Step

Misc. Treated Items

2x2 - 8' Treated #2 above ground
2x6 - 16' T&G Treated #2 Pine
4x8 Treated Lattice

Why Choose Northville Lumber?

Always In Stock – Projects stay on schedule
Wide Selection – From decking to structural timbers
Contractor-Ready – Reliable supply for jobs of any size
Expert Support – Get the right materials the first time

Use the Right Fasteners for Lasting Performance

Pressure-treated lumber requires corrosion-resistant hardware. We stock stainless steel and coated fasteners from trusted brands to ensure long-term performance.

Ready to Start Your Project?

Call or visit our lumberyard today! Our team will help you find exactly what you need.