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Discussion Starter · #1 ·
So I installed my 2" xps board on my basement wall and the PL-300 really took and held well. However, when I put my hand over the top of the board I can notice a slight draft coming from behind the board. Should I seal this or leave it so it can "breathe"?

If I should seal it, what should I use?

Thanks.
 

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Discussion Starter · #3 ·
Ok it is my understanding that the 2" xps board allows some breathability through the board that is slow is this correct? So I seal around the entire foam board against the concrete correct?
 
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