Basement waterproofing is the only solution to keep water from getting into your basement and causing major structural damage, as well as mold, decay, and other moisture-related issues. Interior and/or exterior foundation waterproofing is required when ground water builds up in the soil raising the water table. This process causes hydrostatic pressure to occur and push against the walls and floors of your basement. Unless your basement is properly waterproofed, the water will force its way in through cracks in the foundation walls, openings caused by expansion and contraction of the footing-foundation wall joint and up through the floor cracks.
As foundation waterproofing is necessary anytime a structure is built below or at ground level, which is the vast majority of cases, the industry has developed various foundation waterproofing techniques. Although interior waterproofing can also help solve part of the problems, it cannot prevent by itself severe damage. Exterior foundation waterproofing remains the only method recognized by the International Building Code as adequate for the prevention of wicking and molding of building materials.