Stratum Structural Systems is a basement repair contractor that specializes in waterproofing and fixing a wide range of foundation issues. We’ve helped countless homeowners with cracked and settling foundations, leaky or damp basements, and egress window installation. When you work with Stratum Structural Systems, you’ll have an entire network of registered professional engineers on your side to validate our solutions and protect your home. Stratum Structural Systems is also the premier egress window specialist in St. Louis. Egress windows are designed to provide home occupants a safe place to exit during a time of emergency, and are required to be installed in all basement bedrooms.