Hello My crawlspace is pretty smelly- there doesnt seem to be any visible mold but there is plenty of efflosescence. I also noticed some water on the vapor barrier. I am looking into various ways of dealing with the problem and want to do the right thing. But till then I have noticed a number of openings a) between the interiors wall and the stairs that run over the crawlspace b) the heating returns metal and the dry wall. c) the edge of the floor boards and the banisters for the stairs. I have a vapor barrier on the floor boards and laminate flooring, but some of the smell seeps in through the edges.
a lot of the smell of the crawlspace comes in from there. The heating ducts run through the crawlspace and when its on the whole house smells like the crawlspace - so I dont turn on the forced air at all.
How would you recommend to seal these openings ?
Thanks