Insulation for Existing Crawl Space Floors Description Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.
Radon Fan Description Guide describing how to install a radon mitigation fan with various types of house foundations.
Rigid Foam Insulation Installed over Existing Foundation Slabs Description Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.
Vertical Radon Ventilation Pipe Description Guide describing how to install a radon-mitigating vertical ventilation pipe in new and existing homes with various types of house foundations.