Dampproofing Falls Short For Basementsby Pro-Tech Team on 05/23/12
Fact is, dampproofing material wasn't created to protect basements – or even repel water, for that matter. It's actually a type of unmodified asphalt originally created to prepare road surfaces for other materials.
In typical installations, dampproofing is applied in a layer that's at most 10 mils thick when cured. The material degrades quickly underground, becomes brittle and shatters at low temperatures. Dampproofing won't span foundation cracks. As the foundation develops new cracks over time, dampproofing cracks right along with it. Dampproofing does not serve as a barrier against water entering these cracks. And, unlike waterproofing, dampproofing won't stop water under hydrostatic pressure, which occurs naturally underground.
The composition and performance of dampproofing products simply don't stack up to the composition and performance of waterproofing products. For information on products we recommend, please visit our products page.