How important is this stuff? I am still putting up 1x6 T&G siding and have run out of house wrap. Can I just put up plastic as a vapour barrier? What is the whole idea behind this stuff. It is a $100 bucks a roll around here and I need about 1/4 of a roll. Maybe I should just put up tar paper for the rest, much cheaper... ... . opinions anyone.
Thanks.
Thanks.