STL Polyjack

4.9(222 reviews on Google)

Based in Sappington, MO · listed on the Fenton page

Call (314) 350-7327 Visit website

About STL Polyjack

STL Polyjack in Sappington repairs foundations and basements using polyurethane injection grouting. Its concrete lifting work covers polyjacking, slab jacking and mudjacking, along with void filling, sinkhole remediation, soil stabilization and trip hazard repair on sidewalks and driveways. Basement work includes waterproofing, leak sealing, crack repair and carbon fiber reinforcement. The company is veteran-owned and posts online estimates. Rated 4.9 from 222 Google reviews, 217 of them five stars.

What reviewers mention: front porch (37), walkway leveling (19), professional crew (19), concrete leveling (17), estimate process (16), driveway leveling (15), garage floor lifting (10), front porch repair (7), void filling (7), driveway slab raising (3)

Where STL Polyjack works

Based in Sappington, Missouri. Call to confirm they cover your address.

Services and details

  • Foundation or waterproofing work

    Yes

  • Foundation repair

    Yes

  • Basement waterproofing

    Yes

  • Bowing wall repair

    Yes

  • Crack repair

    Yes

  • Concrete lifting

    Yes

No information yet on piers for settling, crawl space repair, sump pumps, drain tile and drainage, egress windows, free inspection or estimate, financing, states a license, warranty. The website did not say; call and ask.

Contact

Details last checked against the company's website and Google listing on 2026-10-07. Report a correction or request removal. Back to foundation repair companies in Fenton.