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-   -   air sealing (http://www.diychatroom.com/f103/air-sealing-165869/)

Mijotter 12-05-2012 09:22 PM

air sealing
 
Would the PL-300 be ok to seal the seams and at the concrete floor with xps? Do I really need to get spray foam in a can for this? Tyvek tape will go over it. I just don't 100% trust the tape to last for years in all it's stickiness.

Mijotter 12-07-2012 01:05 AM

Anyone know? I don't trust that Great Stuff as I have not read that it's compatible with xps board and don't want it damaging it. The gap at the bottom and the concrete floor is very minimal. Would that PL-300 work for a proper seal?

Gary in WA 12-08-2012 10:02 PM

Yes, the foamboard has been known to shrink over time, loosening tape and breaking adhesive bonds. I'd use canned foam, personally; http://www.buildingscience.com/docum...a-foam-shrinks

Gary


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