About Company

GSI Foundations is a Germantown, Wisconsin–based foundation repair and basement waterproofing company serving the Greater Milwaukee area since 2003. GSI Foundations offers interior and exterior waterproofing (including drain tile installation), foundation crack repair, bowing wall stabilization, transferable warranties, and services tailored to homeowners, home buyers, sellers, realtors and investors; the company combines proven industry techniques, trained crews and in-house assessments to prevent and repair water and structural damage and aims to protect homeowners’ investments while providing responsive, professional service.

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