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Pressure treated wood How can you identify it? any quick tips or tricks?

Pressure treated wood How can you identify it? any quick tips or tricks?


Old 09-14-17, 09:37 AM
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Pressure treated wood How can you identify it? any quick tips or tricks?

I am talking about old weathered wood, not the new stuff which is much more apparant. I am refinishing some exterior deck steps. It seems to be a bit heavy ( like PT) but as I am sanding the old finish, the wood doesn't have that green look or tint. I am about 75% sure it is. So I just thought I would put it out there.
The house is 50 years old but the deck may have been built a bit later.
I am aware PT has been around over 70 years old.
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Old 09-14-17, 01:22 PM
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If the wood's that old and hasn't rotted, it's either PT or something naturally resistant, like cedar.
Old 09-14-17, 03:17 PM
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I agree, unless the wood is pressure treated pine, or a naturally resistant wood like cypress, redwood or cedar - it won't weather well and I'd expect treads to be failing apart [rotten] after a few years [sometimes sooner] PT wood generally looses the extra weight once it has dried out from the PT process.
Old 09-14-17, 03:24 PM
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You might also see places where the salts might be leeching out. But as stated if it's 20 years plus and in good shape then most likely it's PT. What conditions was it exposed to? Usually a deck would be treated wood.

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