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Mike Lamb

Exterior grade lumber

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This lumber is being used for an outside deck. It looks like standard construction grade and nothing that should be used outside. Do these stamps determine location use?  I did a quick walk-by and will look at the house tomorrow.  

Typical pressure-treated lumber is tagged at the end of each piece with treatment info.

lumber2.jpg

lumber1.jpg

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As far as I know there's nothing stating that it cant' be used. It just needs to be well stained and sealed. I see quite a few decks built with untreated wood, personally I would use treated wood for the joists and beams.  

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