New answers tagged lumber
It's called HDPS (high density polystyrene) Most commonly used in decking. Some is a direct replacement for wood, and yes it is expensive. But your deck will last much longer without maintainance. It comes in different densities and the lighter the greater the r value, but the lower the strength. Unfortunatly there are pretenders in the market place. HDPS ...
The answer is simply No. PT wood will warp if you let it sit. It would have to be in an ultra controlled environment to dry and not warp horribly.
Yes, let it dry. Working with wet treated wood is a very bad idea unless you like shrinkage, cracks, gaps, squeaks, etc. Let your framing and decking dry out first. Here in Oregon that means buy the wood and store it in a DRY place. Building with wet wood only causes issue later.
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