I'll have to see what we have floating around in the garage--if we don't have any sealant (not sure, but we *did* inherit some stuff like that when we bought the house) I'll probably do the heavy plastic as a dual water barrier/draft blocker (there are gaps between the boards and, while I could caulk them, plastic would be much faster). Leaving the stuff on the floor works great for me--the less work, the better! Convincing my husband, though... Of course, since I'm doing all the research, that strengthens my argument considerably
This is Dry Den: http://www.bmfp.com/drydenbedding.html

This is Dry Den: http://www.bmfp.com/drydenbedding.html