Revisions log for Answer #2805
This is the answer to the question What vapor barrier option to choose for the roof?
Revision 1
I've lined a kitchen island with OSB myself, and I can tell you that there's quite a bit of work to be done before you glue it with painter's fleece.
Foil is much less prone to mistakes when doing it. If there is a hole in it, you will see it. At first glance, the tightness of the tongue-and-groove joint is not in doubt, but at second glance it is not, because tongue and groove are not always treated equally well or damaged in transit. Then you come to the conclusion that a leak in the joint can only be detected with a BD test or similar instrument. In addition, wall connections with so-called "permanently elastic joints" are guaranteed to be more prone to defects than plastered film and, above all, less durable.