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Ran into a weird issue with my basement vapor barrier last week in Edmonton
I was finishing up my basement reno and noticed the new 6 mil poly had a bunch of tiny holes near the floor joists after I sealed it. Has anyone else had trouble with vapor barrier getting punctured during a DIY basement job around here?
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the_eric3mo ago
Oh come on, is a few pinholes really gonna ruin your whole basement?
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adams823mo ago
Oh man, I actually read somewhere that Edmonton's freeze-thaw cycles can make the ground shift under houses and that can stress the poly. Maybe it's just me but I wonder if the holes are from where the poly was rubbing against something rough near the joists after you sealed it. Idk, I've heard using a layer of rigid foam insulation over the vapor barrier can help protect it from that kind of damage.
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