What’s the difference between foundation dampproofing and foundation waterproofing?
Foundation dampproofing is usually done during construction to meet minimal building code standards. If a basement is unfinished, most building codes only require dampproofing. Unfortunately, many of the builders do not realize the difference between the two processes.
Only foundation waterproofing will correct moisture seepage involving hydrostatic pressure bearing against the external foundation. Dampproofing involves using a hot liquid asphalt and rubber coating with an insulating panel. Dampproofing only deters penetration because they are applied internally and the water is still able to penetrate the foundation externally. Foundation waterproofing systems are applied externally to the foundation, effectively preventing water penetration from seeping through the foundation.