Waterproofing and dampproofing refers to the various products having the main purpose of preventing moisture from entering and damaging the building structure. Areas prone to moisture seepage are the basements, decks and patios, bathrooms and other frequently wet areas.
Dampproofing
Dampproofing is done by coating the foundation with tar-based materials or asphalt. When soil is merely damp and no liquid water present, dampness enters through the porous concrete or masonry material in a process called capillary action. When dampness reaches the interior surface, moisture in the air is increased causing the walls to perspire. Stopping the dampness is relatively easy since no moisture in liquid form is present.
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