Waterproofing Exterior Basement Walls

It s also the most expensive often 15 000 to 30 000.

Waterproofing exterior basement walls.

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. 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. 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. The first waterproofing layer that i applied to the foundation wall was thoroseal foundation coating a cementitious waterproofing product.

Exterior basement waterproofing includes 5 lines of defense installation of an exterior moisture barrier dimple board on the exterior basement wall to transport water to drainage. The surest way to waterproof your basement walls is a full scale exterior waterproofing solution. 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. Moisture membrane provides protection from outside water table and seepage 3 4 washed gravel replaces dirt to.

Only if water can flow through concrete is water detrimental to the structural strength of non reinforced concrete. The principle benefit of the coating is that it fills the pores of the cement block which prevents water from seeping in. Concrete walls can t be damaged merely from direct contact with ground water.