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Vapor Barrier Under Base Plate

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Posted by: from Kitchener
6/23/2020 at 12:44:38 PM

I'm using regular (not pressure treated) wood as my baseplate. Should the vapor barrier under this piece be wide enough to lay flat on the concrete floor (between the concrete wall and the studs) or be long enough to fold up the wall a few inches?

REPLIES (2)
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Date/Time6/23/2020 at 5:47:34 PM

I would use PT for sure and use a sill gasket from foam onset the plate or plastic na diet it wrap the stud at least 3 inches

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Date/Time6/26/2020 at 5:41:48 PM

I would use pressure treated lumber where it comes in contact with concrete. There is the sill gasket or plastic will work, but the main concept is to prevent any moisture from the concrete being absorbed by the wood. Remember, this is the bottom of your walls so you don't want to encourage moisture (rot or mould.) spend the extra and do it correctly.

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