What materials are typically used for foundation crack sealing?

Foundation Repair

Foundation Crack Sealing Materials

When it comes to foundation crack sealing, two primary materials are often used: polyurethane and epoxy. Polyurethane foam is great for preventing water leaks because it expands to fill voids, keeping moisture out of the crack. Meanwhile, epoxy offers structural reinforcement by hardening into a solid seal that helps restore your foundation’s stability.

Choosing the right material depends on the type of crack and your specific needs. For leaks or water intrusion, polyurethane injections provide a waterproof seal. For structural cracks or areas under high stress, epoxy injections are used to reinforce the concrete. In some cases, both methods are combined for comprehensive protection and long-lasting results.

If you’d like to learn more about how we inject and seal these cracks from the inside—without costly excavation—visit our Foundation Wall Crack Repair page. Understanding your options ensures you can safeguard your property’s integrity effectively and affordably.

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