Basement Pros › Waterproofing Contractors
Ontario · updated October 2026
Waterproofing Contractors: the standings
368 waterproofing contractors ranked across 29 Ontario communities, by Google rating and review count from 23,172 reviews. Refreshed monthly. Nobody can pay to move up.
Who leads in each community
The waterproofing contractors holding first place on each town board, ordered by review volume.
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Groundworks Foundation Repair Toronto
#1 of 19 waterproofing contractors in Markham -
Aquatech Basement Waterproofing Toronto
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Supreme Services
#1 of 19 waterproofing contractors in Windsor -
The Crack Specialists
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O'Dwyer Insulation
#1 of 20 waterproofing contractors in Guelph -
Canada Waterproofers
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ServiceMaster Restore of Niagara
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Orella Group - General Construction | Plumbing | Waterproofing Services in Oakville, Burlington, Toronto & GTA
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Dryshield Basement Waterproofing Toronto
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Omni Basement Systems
Waterproofing Contractors by community
Pick a town for its full board, in order.
- Ajax — 11 ranked
- Barrie — 19 ranked
- Brampton — 19 ranked
- Brantford — 19 ranked
- Burlington — 19 ranked
- Cambridge — 19 ranked
- Etobicoke — 20 ranked
- Guelph — 20 ranked
- Hamilton — 20 ranked
- Kitchener — 19 ranked
- London — 19 ranked
- Markham — 19 ranked
- Milton — 17 ranked
- Mississauga — 20 ranked
- Newmarket — 20 ranked
- Niagara Falls — 20 ranked
- North York — 20 ranked
- Oakville — 20 ranked
- Oshawa — 19 ranked
- Pickering — 8 ranked
- Richmond Hill — 20 ranked
- Scarborough — 20 ranked
- St. Catharines — 20 ranked
- Toronto — 20 ranked
- Vaughan — 20 ranked
- Waterloo — 18 ranked
- Welland — 11 ranked
- Whitby — 19 ranked
- Windsor — 19 ranked
How these standings are built
Rank = Google rating × review volume. We read the public Google listing for every
business on these boards, in October 2026, and order each town board by that score. There are
no submissions and no fees. A business moves up by earning reviews.
Featured placement is available to claimed businesses, is always labelled as such, and never
changes a rank. The boards are refreshed monthly.
Run a waterproofing business?
Your customers already put you on one of these boards. Claiming is free: your description, your services and your correct hours on your profile. The rank stays earned either way.
Claim your listing — free