Where should I use rFoil or No-Tear?
There are two specific places to use No-Tear: on the attic floor, and as a housewrap. You should use only No-Tear here because it’s perforated to allow moisture to escape. You can install rFoil everywhere else: walls, ceilings (under drywall), crawlspaces and basements, water heater, heating ducts, radiant floor heating systems (installed under a wooden floor). There is one exception to this: Concrete Barrier. Concrete Barrier should only be used under concrete. Do NOT use regular rFoil.