Awasome Keep Water Out Of Slab Home References. “the correction of leakage in a completed basement is most frequently achieved by providing a positive means of releasing water from outside the walls to a point beneath the. Seal all of the air bricks in your home.

Drain the water out of the crawl space. You can prevent water from seeping through your foundation slab by controlling how much water saturates the soil outside your walls and under your slab. Use a special flood prevention sealant, such as flood sentry, to.