Lewisville, TX · Foundation Specialist

A-1 Guaranteed Foundation Repair is based in Lewisville, Texas, and its website describes service across Lewisville, Carrollton, Dallas, and the broader Dallas–Fort Worth area. The company's site describes four residential foundation services. For slab foundations, it offers pressed concrete pier installation, steel pier installation for deeper settlement or more demanding soil conditions, and tunneling when a slab leak is involved. The site explains that tunneling allows flooring to remain intact while addressing leaks beneath the slab, and notes it as the preferred approach when multiple leaks are present. For pier and beam foundations, the company describes post and pier shimming, full beam replacement using pressure-treated lumber, new concrete pier installation when existing piers have failed, and vapor barrier and ventilation work in the crawl space to address moisture. Beyond structural repair, the site describes drainage correction services — specifically French drains, swales, and grading — aimed at redirecting water away from the foundation. It also describes root barrier installation, in which underground barriers are placed to redirect tree roots before they can shift or crack a foundation, which it identifies as a common and preventable cause of damage in the DFW area. The site additionally notes that the company performs foundation repair and drainage work on commercial properties, including multi-unit and investment properties, throughout the Dallas–Fort Worth Metroplex. A-1 Guaranteed Foundation Repair holds a 4.7 rating from 56 Google reviews as of 2026-08-03.

• Compiled from public Google Business Profile data