Crawl Space Repair - FrothPak Insulation Keeps Rim Joist Sealed
The rim joist (that area around the perimeter of the crawl space 'ceiling') needs a product like FrothPak (it's the orange foamy stuff) for effective insulation. It can be sprayed into every nook and cranny for complete insulation, and is inorganic and waterproof to prevent mold growth or degradation.