Bubble wrap as knee wall barrier only
I understand the argument against bubble wrap as radiant barrier and duct insulation (and agree) but how about as a knee wall air barrier? edges and seams are air sealed of course, it is easier to get in attic hatches, and can be attached with a slap stapler. I know rigid air barrier would have more R-value, but is there any possible moisture issue or negative effects of bubble wrap on attic knee walls? Thanks!
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