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What is the difference between waterproofing and damproofing?

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What is the difference between waterproofing and damproofing?

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Damproofing will resist penetration of moisture through a foundation into the interior under normal conditions. Waterproofing will do the same even in the presence of hydrostatic pressure.

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Damproofing is what we consider an out-dated building code that more and more states are replacing. Wayne Fortier, our founder, used to say ” Damproofing a foundation is like putting tar paper on a roof and expecting it to shed water.” Waterproofing is a much thicker application that remains flexible under ground over time, and will span small defects in the concrete, such as shrinkage cracks. Waterproofing membranes come with anywhere from a 10-year to 30-year warranty, while damproofing generally offers no warranty at all. For pennies more per square foot, waterproofing is a far better choice for the average builder and homeowner.

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