I have a regular, about 24" tall crawl space under my house with no insulation.
As the joists are on 16' centers I was planning to use regular r19 batts.
My question is can I use plastic sheeting on the outside, not only to hold the batts in place but as a leak seal?
As my part of New Mexico has almost no rain and the average humidity is normally in single digits I don't think condensation is a problem.
Any input please.
