What is the difference between treated and pressure treated wood?
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Hereof, when should I use treated wood?
Pressure-treated wood is required whenever you attach framing lumber or furring strips directly to concrete or other exterior masonry walls below grade. Note that this requirement is only for exterior walls, as these may wick moisture onto the lumber.
Also Know, how long does pressure treated wood last? 40 years
In this regard, what is pressure treated wood treated with?
Until 2003, the preservative most commonly used in residential pressure-treated lumber was chromated copper arsenate (CCA), an extremely toxic chemical.
Why is pressure treated wood cheaper?
The vacuum works by forcing the preservative agents deep into the wood thus ensuring preservatives go all over the wood. As a result of the added components, pressure treated lumber is bulkier than the untreated lumber. However, pressure treated lumber is less expensive than the naturally rot-resistant lumber.