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4-in x 6-in Pressure Treated Lumber

11 results

Multiple Sizes Available

Severe Weather 
4-in x 6-in #2 Southern yellow pine Ground contact Pressure Treated Lumber

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4.3
5096
Drying Method:Kiln-dried
Actual Thickness (inches):3.5
For Use with:Decking, Landscaping, Fencing

Severe Weather 
4-in x 6-in x 12-ft #2 Southern yellow pine Ground contact Pressure Treated Lumber

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4.6
11
Drying Method:Kiln-dried
Actual Thickness (inches):3.5
For Use with:Landscaping

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4-in x 6-in x 16-ft #2 Southern yellow pine Ground contact Pressure Treated Lumber

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5.0
2
Drying Method:Kiln-dried
Actual Thickness (inches):3.5
For Use with:Landscaping
Multiple Sizes Available

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4-in x 6-in Ground Contact Pressure Treated Lumber

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for pricing and availability

3.3
9
Drying Method:Green
Actual Thickness (inches):3.62
For Use with:Decking, Landscaping
Multiple Sizes Available

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4-in x 6-in x 8-ft #2 Hem fir Ground contact Pressure Treated Lumber

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4.4
430
Drying Method:Green
Actual Thickness (inches):3.59
For Use with:Decking, Landscaping, Fencing
Multiple Sizes Available

Severe Weather 
4-in x 6-in #2 Southern Yellow Pine Ground Contact Pressure Treated Lumber

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for pricing and availability

4.2
31
Drying Method:Kiln-dried
Actual Thickness (inches):3.53
For Use with:Decking, Landscaping, Fencing
Multiple Sizes Available

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4-in x 6-in #2 Btr Douglas fir Above ground Pressure Treated Lumber

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3.6
22
Drying Method:Green
Actual Thickness (inches):3.625

Severe Weather 
4-in x 6-in x 12-ft 2 Southern yellow pine Ground contact Pressure Treated Lumber

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for pricing and availability

4.0
2457
Drying Method:Kiln-dried
Actual Thickness (inches):3.5

 
4-in x 6-in x 8-ft #2 Btr Ground contact Pressure Treated Lumber

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for pricing and availability

Drying Method:Green
Actual Thickness (inches):3.625
For Use with:Decking, Landscaping

Severe Weather 
4-in x 6-in x 16-ft #2 Southern yellow pine Ground contact Pressure Treated Lumber

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for pricing and availability

4.0
2457
Drying Method:Kiln-dried
Actual Thickness (inches):3.5

Severe Weather 
4-in x 6-in x 14-ft 2 Southern yellow pine Ground contact Pressure Treated Lumber

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for pricing and availability

4.0
2457
Drying Method:Kiln-dried
Actual Thickness (inches):3.5
For Use with:Landscaping

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1-1/4-in x 6-in x 14-ft Standard Southern yellow pine Above ground Pressure Treated Lumber (Recommended for Deck Boards)

Severe Weather   1-1/4-in x 6-in x 14-ft Standard Southern yellow pine Above ground Pressure Treated Lumber (Recommended for Deck Boards)

Pressure treated southern yellow pine decking with a lifetime limed warranty.

Pressure Treated Lumber for Outdoor Projects 

Wondering what pressure treated lumber is and how to use it? We're here to help. Pressure treated lumber is wood that's been placed under intense pressure and infused with chemical preservatives. This treatment makes the wood resistant to decay, insect infestation, and moisture-related damage like mold and rot. Some varieties are also fire retardant, making them even more durable in outdoor settings.



Where to Use Pressure Treated Lumber

Pressure treated lumber is ideal for exterior applications. Use it when building decking boards, wood decks, gazebos, and wood fence posts and panels. It's also great for playsets, pet houses, and garden beds. Though treated wood is more resistant to termites than untreated options, it's not completely termite-proof. To extend the life of your structure, periodically apply a sealer or waterproof finish. When shopping, look for products backed by warranties against fungal decay and termite damage.



Ground Contact vs. Above Ground Use

While pressure treated lumber is perfect for outdoor projects, not all types are rated for ground contact. Be sure to check the label. For anything that will touch the ground—like deck posts or fence posts—choose ground-contact-rated lumber. For elevated applications, opt for above-ground-rated lumber. Lowe's carries a wide range of sizes for both types, including 4 x 6 pressure treated wood posts, 6 x 6 posts, and more.



Can You Stain or Paint Pressure Treated Lumber?

Yes, you can paint or stain pressure treated wood, but only after it has fully dried. Do a simple test: drop a bit of water on the surface. If it beads up, the wood isn't ready. If it soaks in, it's dry enough for finishing. Depending on when the wood was treated, this could take weeks or even months.



Get Started With the Right Materials

Ready to start your next outdoor project? Find pressure treated wood for ground contact, above-ground applications, and various sizes including 4 x 6 and 6 x 6 posts. For an in-depth look at wood types, grades, and pricing, check out our helpful Lumber Buying Guide.