Rigid Foam Board Insulation for Existing Band Joists Description Guide describing principles of insulating and air sealing band joists as a stand alone energy upgrade, or as part of creating a closed crawlspace.
Water Management of Existing Basement Floor Description Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.
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.