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Find the 34 Best Waterproofing Contractors in Ontario, ON

Browse 34 waterproofing businesses serving Ontario, ON, including Mississauga, North York and Oshawa, for residential and commercial projects. Review basement, foundation and exterior waterproofing services, read customer feedback and contact local contractors for quotes.
Ajax (1)
Arkona (1)
Beamsville (1)
Bowmanville (1)
Brampton (1)
Burlington (1)
Cambridge (1)
Dundas (1)
Hamilton (1)
Kingsville (1)
Leamington (1)
Mississauga (4)
Mount Forest (1)
Niagara Falls (1)
North York (3)
Oakville (1)
Orangeville (1)
Oro Medonte (1)
Oshawa (2)
Peterborough (1)
Saint Catharines (2)
Singhampton (1)
Stratford (1)
Tiny (1)
Toronto (2)
Windsor (1)
7 reviews
Russell & Sons Waterproofing
50+ Years
Emergency
7 reviews
We have over 40 years of experience in residential and commercial waterproofing.
Trusted waterproofing experts since 1967. Offering basement waterproofing, crack repairs, and sump pump installations in Peterborough. Year-round service, 7 days a week. Seniors discount available.
Basement Waterproofing Crack Repairs Sump Pump Installation
(705) 742-5843 Call Profile
7 reviews
Robson Foundations
7 reviews
We offer 40+ years of specialized foundation repair expertise in Niagara Region
Robson Foundations offers expert foundation repair and waterproofing services in Niagara, ON, with over 40 years of experience ensuring durable, reliable solutions.
Foundation repairs Waterproofing solutions Structural repairs
(905) 732-7445 Call Profile
6 reviews
TRS Waterproofing & Drainage
23 Years
Emergency
6 reviews
We have over 20 years of experience in residential and commercial waterproofing.
TRS Waterproofing & Drainage offers expert basement waterproofing, foundation repair, and drainage solutions in Windsor and Leamington with a 25-year warranty. Serving Essex County since 2003.
Basement Waterproofing Exterior Waterproofing Foundation Repair
(519) 791-3856 Call Profile
5 reviews
GJ MacRae Foundation Repair
50+ Years
Emergency
5 reviews
We offer 50 years of specialized foundation repair expertise
Award-winning basement waterproofing & foundation repair in Toronto since 1975. Family-owned experts serving GTA with 50+ years experience, 10,000+ warranties issued.
Basement Waterproofing Foundation Crack Repair Sump Pump Installation
(905) 824-2557 Call Profile
Foundation Fix
36 Years
Emergency
5 reviews
Foundation Fix
36 Years
Emergency
5 reviews
We offer a lifetime warranty on all foundation repair services.
Trusted foundation repair services in Niagara Falls and St. Catharines. Lifetime warranty. Contact Foundation Fix for waterproofing, crack repair, and foundation stabilization.
Exterior Waterproofing Interior Waterproofing Crack Injection
(905) 563-4270 Call Profile
5 reviews
Wet And Humid No More
16 Years
5 reviews
We have over 19 years of experience in foundation and structural repairs.
Trusted waterproofing solutions in Niagara Falls. Expert foundation repairs, sump pump installation, and basement waterproofing. Contact Wet And Humid No More for reliable service.
Interior Waterproofing Exterior Waterproofing Sump Pump Installation
(289) 296-3076 Call Profile
2 reviews
Royal Waterproofing & Contracting
41 Years
Emergency
2 reviews
We offer free in-home inspections for all waterproofing needs
Expert waterproofing solutions in Toronto since 1985, offering basement repair, foundation waterproofing, and sump pump installations with a lifetime guarantee.
Wet Basement Repair Basement Waterproofing Exterior Waterproofing
(416) 922-9661 Call Profile
2 reviews
Benchmark Waterproofing
44 Years
2 reviews
Over 50 years of combined experience in waterproofing and foundation repair.
Trusted Toronto waterproofing company since 1982. Expert basement waterproofing, foundation repair, sump pumps, and weeping tile services in Toronto & GTA. Free estimate.
Basement Leak Repair Basement Waterproofing Foundation Repair
(416) 283-7424 Call Profile
Not rated yet
Accl Group-Waterproofing Contractors
46 Years
Emergency
Not rated yet
30-year warranty on waterproofing systems
Trusted Toronto waterproofing experts since 1980. Specializing in basement waterproofing, foundation repair, and mold remediation with advanced materials and 30-year warranties. Serving GTA homeowners and businesses.
Internal Waterproofing External Waterproofing Basement Underpinning
(866) 701-8484 Call Profile
Not rated yet
Independent Contracting
Emergency
Not rated yet
We offer 30+ years of regional waterproofing expertise
Trusted waterproofing and foundation repair services in Clarington, ON. Over 30 years of experience delivering rapid, cost-effective solutions. Call 905-697-6474 for expert foundation repairs.
Foundation Repairs Basement Waterproofing Window Well Installation
(905) 697-6474 Call Profile