5-Year Transferable Warranty | Fully Licensed & Insured | Serving Thunder Bay & Northwestern Ontario for Over 10 Years. Free On-Site Estimates.

Exterior foundation waterproofing & excavating.

Protecting Thunder Bay homes from basement leaks, foundation water damage and drainage issues.

Exterior Foundation Waterproofing & Drainage Services in Thunder Bay & Surrounding Areas

Based locally and serving Thunder Bay, Neebing, Oliver Paipoonge, Shuniah, Murillo, Kakabeka Falls, and South Gillies. Northwest Exterior Waterproofing brings over 10 years of hands-on excavation, foundation repair, and exterior drainage experience to protect Northwestern Ontario homes from wet basements and structural water damage.

Exterior Waterproofing

Full perimeter excavation, waterproofing membrane installation, weeping tile replacement, and foundation sealing.

Drainage & Grading

Custom natural ditch drainage, sump pump installation, site re-grading, and surface water diversion.

Foundation Repair

Foundation crack repair, polyurethane injections, hydraulic block filling, and trailer skirting replacement.

Municipalities & Communities We Serve:

Thunder Bay (North & South)  |  Neebing  |  Oliver Paipoonge  |  Shuniah  |  Kakabeka Falls  |  Murillo  |  South Gillies

Northwest Exterior
Waterproofing.

📍 Thunder Bay, ON

Serving Thunder Bay and surrounding communities with 10+ years of professional excavation and foundation drainage expertise.

Request a Free Estimate