Design Guide for Dry Basements in Existing Homes

摘要

Methods available to homeowners to correct basement water problems are outlined. While some of the recommended measures would require a contractor's services, many can be taken by homeowners themselves. Conditions which contribute to wet basements include poor grading of ground adjacent to basement walls, the settlement of ground outside the basement walls, and defects or absence of gutters and downspouts. Other common problems include the improper care and use of outside hose faucets, below - grade windows and stairwells, settlement cracks in walls and floors, and undersized sump drains or sump pumps which are not working. Further problems include high underground water levels and defective or nonexistent underground drains. Solutions include adding surface fill, adding splashbacks or leader extenders to downspouts, caulking at floor and wall junctures and other joints, adding gravel to window wells, and improving ventilation or insulation to reduce condensation. Sump pumps, moisture or vapor barriers, and perimeter drains are also discussed. The steps required for a contractor to install interior perimeter drains are listed in detail. Illustrations, an appendix listing waterproofing compound manufacturers, and a bibliography listing 14 references are provided.