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333 Construction Group

Concrete · waterproofing · ON

Waterproofing in Grimsby.

Grimsby is approximately 55 min from the Hagersville base. Waterproofing projects are considered individually based on scope and travel. Interior patches treat the symptom. We dig to the footing, repair cracks, membrane the wall, install drain board, and re-route water around the foundation — the right way to stop a wet basement.

Mini excavator next to a concrete block foundation, prepared for waterproofing
Service photo pending final client attribution and location approval.

Waterproofing done right in Grimsby

Why local matters.

Different towns have different ground, different builders' shortcuts, and different rules. We've worked Grimsby long enough to know which.

  • 01

    Excavate to footing depth

  • 02

    Hydraulic crack repair + parging

  • 03

    Self-adhesive rubberized membrane

  • 04

    Dimple board / drain board

  • 05

    New weeping tile to sump or daylight

  • 06

    Window-well drainage tied in

How a waterproofing job runs

From first call in Grimsby to clean exit.

  1. 01

    Diagnose

    Camera scope the existing weeping tile, find the entry points.

  2. 02

    Excavate

    Down to the footing, one wall at a time.

  3. 03

    Repair

    Cracks injected, parging where needed.

  4. 04

    Membrane

    Liquid-applied + dimple board.

  5. 05

    Drainage

    New tile, clear stone, filter fabric.

  6. 06

    Backfill

    Granular up, native soil capped, graded away.

FAQ

Waterproofing in Grimsby — common questions

  • Yes. Escarpment side gets us retaining wall work, lakeside gets us patios and interlock. We bring real Niagara experience to both. Wet basement? We dig down and fix it from the outside.

  • Waterproofing jobs typically start at $180/linear ft. Final price depends on access, prep, size, and finish. We quote a fixed price after seeing the site — no hourly creep.

  • About 55 min (60 km). It's a normal part of our week.

  • Exterior is the only one that stops water from reaching the wall. Interior systems (interior weeping tile, sump pumps) manage water once it's already inside. If you can dig, dig.

  • One wall is typically 2–3 days. Full perimeter is 5–8 days depending on access and depth.

Free quotes

Quote waterproofing in Grimsby.

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