| Includes | dampproofing materials used to resist moisture penetration through foundation walls and similar surfaces subject to high humidity, dampness, or direct water contact, but not subject to hydraulic pressures. Impervious waterproofing membranes, coatings, and other materials applied to walls, slabs, decks, and other surfaces subject to hydrostatic pressure or water immersion. Boards and coatings, and drainage media integral to dampproofing and waterproofing. |