Pressure treated pine

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What is pressure treated wood used for? What does pressure treated wood mean? How long does pressure treated pine last in decking?

This double treated Ground Contact lumber must be used for applications where treated lumber is difficult to maintain, repair or replace. Southern Pine ’s ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. The unique cellular structure of Southern Pine permits deep and uniform penetration of preservatives, rendering the wood useless as a food source for fungi, termites and micro-organisms. Research shows that Southern Pine can be expected to last for many decades when properly treated and installed for its intended use.

Whether used for decks, screen porches, playground sets, fencing or sandboxes, PTP is the best value for your buck. Around of the pressure-treated wood in the US is made from southern yellow pine. There are a few different sub-species of southern yellow pine , with different wood densities.

We used the longleaf variety to calculate the values shown below. See Weight of Dimensional Lumber for the weights of other wood species commonly used for lumber. Certain chemicals, such as the water-repellent CA-C (copper azole type C), also makes the wood suitable for ground contact, even in marine environments.

To infuse these preservatives, the wood is immersed and placed in a pressure chamber. The boards are rolled into giant pressurized. The predominant species of treated wood is a regionally available softwood.

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The treatment process involves placing a load of lumber in a huge cylindrical chamber called a retort with a door on one end that can be sealed airtight, and then forcing waterborne chemicals into the wood under pressure. The treatment process forces a waterborne preservative deep into the cellular structure of the wood providing long-term protection against rot, fungal decay and termite attack. Over several months, pressure - treated Southern Pine lumber will weather naturally to an appealing silver-gray color. Most importantly, Southern Pine should be dry before any type of finish is applied. It is a fast growing tree, being one of the few types that can be pressure treated.

Other types of wood have a different cell structure and will not accept the treatment process. If economy and longevity are your bag, go with pressure-treated wood. Pressure-treated decking pros and cons.

It’s stainable, hard enough to resist abuse, and many brands carry a lifetime (though limited) warranty. But beware, not all treated woods are created equal. The standard treated decking at my local lumberyard costs less than cedar.

When you shop for pressure treated lumber, you are offered a selection of different grades of lumber, for instance, Number yellow pine, and “Prime” yellow pine. Both of these are pressure treate one, Prime, is a higher quality lumber without large knots, wained edges, splits, or other issues. That means the wood is.