How much does it cost to seal the outside of your house?

Waterproofing includes planning, preparing, sealing foundations, waterproofing walls with cement, installing a sump pump or perimeter drain, diverting runoff from the base downspout and an epoxy injection to repair cracks Waterproofing interior walls and your basement floor with a concrete coating costs the same as waterproofing the outside without the considerable cost of digging up the ground. The cost of waterproofing the basement also depends on whether the work includes waterproofing inside the basement or outside.