Waterproofing Exterior Basement Walls

The surest way to waterproof your basement walls is a full scale exterior waterproofing solution.

Waterproofing exterior basement walls.

When waterproofing basement walls with it brush or roll the paint on thickly enough to fill all the little surface holes then allow it to dry fully before a second coat is applied. Exterior waterproofing involves excavating all around the house to the full depth of the foundation walls then installing a waterproof coating or membrane topped by drainage panels. The principle benefit of the coating is that it fills the pores of the cement block which prevents water from seeping in. Therefore exterior concrete walls will not be damaged by mere contact with ground water and don t require waterproofing.

The first waterproofing layer that i applied to the foundation wall was thoroseal foundation coating a cementitious waterproofing product. Install a waterproofing membrane. It s also the most expensive often 15 000 to 30 000. Moisture membrane provides protection from outside water table and seepage 3 4 washed gravel replaces dirt to.

Most exterior basement waterproofing coating methods are of little value in preventing water from entering the basement as you can see by studying the basement cut away sketches. Only if water can flow through concrete is water detrimental to the structural strength of non reinforced concrete. A heavy coat of the membrane an asphalt modified polyurethane material can be troweled or sprayed on to seal the foundation wall against water from the outside.