Crawl Space Repair - Foamax on Foundation Walls

The foundation walls of this crawl space have been covered with a special foamboard called Foamax. It has an R-10 insulation value and acts as both an air barrier and vapor retarder. The foamboard is mechanically fastened to the foundation walls, with all the seams sealed with can foam, to ensure that the outside air and moisture cannot penetrate the crawl space. Without this protection, moisture would seep through the porous cinderblock walls, and affect not only the relative humidity but the air quality as well. The homeowners would experience high energy bills, with their system trying to keep the home warm during the cooler seasons, and the AC attempting to cool their home during the warmer seasons.