A J Waterproofing

4.8(185 reviews on Google)

Based in Collegeville, PA · more companies in Collegeville

Call (610) 527-9444 Visit website

About A J Waterproofing

A J Waterproofing is a family owned and operated company serving Collegeville and the Main Line area, in basement waterproofing since 1976. It handles residential and commercial jobs, including basement waterproofing, wall parging, sump pump installation and battery backup pumps, French drains, downspout corrections and outside grading. Crack sealing and fixes for leaking wall cracks, floor leaks and dampness are on the list too, and yard and stormwater drainage is a second focus. Estimates are free with no pressure, and financing is offered for up to 60 months. Each solution carries a written, transferable lifetime guarantee. Rated 4.8 from 185 Google reviews, 177 of them five stars and 7 one star. Call or text to request a quote, or ask about mold, mildew and musty odors in the basement.

What reviewers mention: basement work (107), french drain installation (39), sump pump installation (36), basement waterproofing (28), facetime quote (12), dry basement (8), phone consultation (4), dehumidifier suggestion (3), leak detection (3), crawl space moisture (2)

Where A J Waterproofing works

Based in Collegeville, Pennsylvania. Its website also names Skippack, Kulpsville, Harleysville, Schwenksville, Audubon, Spring Mount, Oaks, North Wales and other towns. Call to confirm they cover your address.

Services and details

  • Foundation or waterproofing work

    Yes

  • Basement waterproofing

    Yes

  • Crack repair

    Yes

  • Sump pumps

    Yes

  • Drain tile and drainage

    Yes

  • Free inspection or estimate

    Yes

  • Financing

    Yes

  • Warranty

    Yes

No information yet on foundation repair, bowing wall repair, piers for settling, crawl space repair, concrete lifting, egress windows, states a license. The website did not say; call and ask.

Contact

Details last checked against the company's website and Google listing on 2026-10-09. Report a correction or request removal. Back to foundation repair companies in Collegeville.