Jeremy Posted November 11, 2020 Author Share Posted November 11, 2020 3 hours ago, scottishjohn said: must be closed cell foam --not open cell -open cell is not water proof Will closed cell foam, once set allow the wall to breathe, e.g. prevent condensation from forming? Or is it because it is an impermeable barrier that condensation won't be a problem? Link to comment Share on other sites More sharing options...
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