Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

When installing faced insulation into exterior walls, are there any benefits or detriments to adding an additional vapor barrier to either the non-faced side of the insulation?

share|improve this question
    
why is this a community wiki? –  mohlsen Jul 26 '10 at 17:53

1 Answer 1

up vote 4 down vote accepted

not 100% certain on this, but a double vapor barrier will actually cause harm as the moisture will have no where to escape to. Especially if you place it on the non-faced side. If you place it on the already faced side, it probably wont hurt, but is pointless as you already have the barrier .

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.