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Pressure treated timber is timber impregnated with chromated copper arsenate under pressure and vacuum cycles. These preserve the timber from various fungicides that would normally eat the timber reducing its life-span.

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13y ago

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What is pressure treated lumber?

PT lumber is regular wood with a chemical preservative which has been forced to penetrate the wood using pressure.


Does pressure treated lumber shrink over time?

Yes, pressure treated lumber may shrink over time as it dries out.


How can you determine if lumber is pressure treated?

To determine if lumber is pressure treated, look for small incisions or punctures on the surface of the wood, which indicate that chemicals have been forced into the wood under pressure. Additionally, pressure-treated lumber is typically labeled with a stamp or tag indicating that it has been treated.


Pressure-treated wood contains the carcinogen?

Older pressure treated lumber known as CCA was treated with 3 substances, Chrome, Copper, and Arsenic. Newer treated lumber intended for consumer contact is now treated with different chemicals, such as copper/boron. Lumber NOT intended for consumer contact, such as buried or submerged lumber may still be CCA treated. PS- it is not a good idea to burn ANY treated lumber. If it kills bugs and fungi, it is likely not real good for you, either.


What is green lumber?

You might be referring to 'pressure treated' lumber, or lumber that has been milled but not dry.


Is treated or regular lumber better for a fence?

Treated, because it will resist insects.


Can pressure treated lumber be set in concrete?

yes it can


Can you paint pressure treated lumber?

Yes, you can paint pressure treated lumber, but it is important to allow the wood to dry completely before painting and to use a primer specifically designed for pressure treated wood to ensure the paint adheres properly.


When and where should you use treated lumber?

Treated lumber should be used in outdoor construction. There are different types of treated lumber, some are for above ground use and some are for below grade use.


Is pressure treated lumber harmful to children?

There are chemical used in the pressure treatment that may be harmful.


Is cedar lumber ever pressure treated?

It doesn't need to be treated. It is resistant to fungus without treatment.


Can pressure treated lumber be safely used indoors for construction projects?

No, pressure treated lumber should not be used indoors for construction projects due to the chemicals used in the treatment process, which can be harmful if exposed to indoors.