A.d.s. Wash and Seal
“We are very happy with the service and would recommend him to anyone in Hamilton and the surrounding areas.”
Best Basement Waterproofing Contractors near Grimsby, ON
These contractors serve Grimsby from nearby bases in towns including Hamilton, Caistor Centre and Stoney Creek.
13 contractors listed · 2 open 24/7 · 7 open weekends · 11 rated 4.5+ · 1 shows a licence
Data verified October 21, 2026
Ontario Concrete Raising Ltd.
“Explained the process to us, did a great job, and left the area nice and clean.”
Harris Waterproofing
“Malcolm and his team were very professional and coordinated with all tentants to waterproof every unit.”
Foundation Fix Inc.
“They also scheduled me for the next week and did a great job, showed me the progress and took pics for me for record.”
Basement Technologies
“Very fair in their pricing, incredibly professional, and went above and beyond to leave the space in better condition then they found it.”
Golfi Concrete & Drain Limited
“Price, punctuality, service, and their post customer care is above none.”
The 13 contractors listed for Grimsby, ON work on wet basements, foundations and crawl spaces. Warranty claims, free inspection offers and hours come from each company's own website. Ask each one how the proposed repair holds up through frost, because that is where local systems fail.
Area overview: Grimsby, ON
12 of the 13 contractors on this page have a rating, from 4.2 to 5.0 across 410 reviews; 2 have 50 or more reviews and 11 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (96%), quality (88%) and responsiveness (79%). The topics that come up most in reviews of the contractors on this page are "price" and "estimates". 2 are open around the clock; 7 are open on Saturdays and 4 on Sundays. 1 shows a licence on its website. Domain records put 7 websites of the contractors on this page at ten or more years old; the oldest dates from 2000. 2 offer emergency call-outs; 5 give free estimates and 2 are family- or locally-owned. We have a website on file for all 13 of the contractors on this page; all 13 publish a contact page and 8 list a public email. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
How many opinions should I get for a damp problem?
There are 13 listings for Grimsby. Get more than one assessment before committing, because diagnoses here differ more than prices do, and one crew's interior system is another crew's regrading and downspout job. Compare what each one says is causing the water rather than the number at the bottom.
Bellecasa Waterproofing Ltd
“We received amazing service from the initial call we made, excellent workmanship and the crew was polite, honest and told us exactly what needed to be done to repair our home.”
Robson Foundations
“Mark assessed the problem thoroughly - and they even double checked our weepers to ensure our foundations healthy was in good shape when they left.”
Dryseal Concrete Solutions Inc.
“They addressed any questions or concerns and worked super long hours.”
2 Dads Waterproofing Inc.
“Two Dads waterproofing Ryan and Pete have competitive pricing, are very knowledgeable and super friendly.”
Kemper Concrete Inc.
“Best quality concrete floors, exceptional service.”
Algoma Contractors
MDK Contracting Inc.
Why these companies made our list
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