Problem: Cracks Forming in Basement Walls and Floors

Cracking in basement walls and floors is fairly common, even in newer homes. Cracks both small and large allow moisture to penetrate walls and, over time, result in water seepage and bowed walls. A further concern is that cracks of any size can allow radon, a deadly odorless, colorless gas, to enter your basement. All cracks should be inspected and treated by a professional, since even small settlement and shrinkage cracks can develop into serious structural problems.


Most commonly, cracks are the result of foundation settling. The dirt surrounding a home can expand and contract as the seasons change, exerting significant pressure on the walls. Homes built in areas that have high water tables are subject to this pressure. Improper water drainage from rain gutters (or lack thereof) can also raise the water table and exert strong hydrostatic pressure against the foundation. Eventually, water will find its way into your basement via any cracks.

Cracks in the foundation can also be the result of poor construction or improper backfilling. In brand-new homes, cracks form because of foundation and basement concrete shrinkage (which occurs as concrete dries and cures over time).


Any and all foundation cracks should be inspected and sealed by a qualified professional. Even though non-structural cracks may not compromise the integrity of the foundation, they can still cause water seepage and radon exposure.

Affordable Waterproofing specializes in a simple, cost-effective sealing process that will keep water out. Cracks can be sealed from the inside or outside of the foundation, depending on the situation. An injection process completely fills the crack with an epoxy and urethane paste, creating a seamless, strong adhesion with concrete. The injection of epoxies and polyurethane foams has proven to be effective for repairing concrete cracks.