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Oshawa · updated October 2026
Waterproofing Contractors in Oshawa: the standings
19 waterproofing contractors serving Oshawa, ranked by Google rating and review count. The bar shows each one's review volume against the leader. Arrows show movement since Sep 6. Nobody can pay to move up.
Featured slot — open
One labelled spot above these standings, reserved for a claimed Oshawa business. It never changes the ranking below. Claim your listing to take it.
Who leads waterproofing contractors in Oshawa right now
- 1— +7 reviews since Sep 6
- 2▲1 +17 reviews since Sep 6
- 3▲1 +2 reviews since Sep 6
- 4▲1 +1 reviews since Sep 6
- 5new 0 reviews since Sep 6
- 6— 0 reviews since Sep 6
- 7— +1 reviews since Sep 6
- 8new 0 reviews since Sep 6
- 9new 0 reviews since Sep 6
- 10▼1 0 reviews since Sep 6
- 11▼1 0 reviews since Sep 6
- 12new 0 reviews since Sep 6
- 13— 0 reviews since Sep 6
- 14▲1 +1 reviews since Sep 6
- 15▼1 0 reviews since Sep 6
- 16— 0 reviews since Sep 6
- 17— 0 reviews since Sep 6
- 18— +1 reviews since Sep 6
- 19— 0 reviews since Sep 6
How the standings work. Rank = Google rating × review volume, observed for the
Oshawa area in October 2026. No submissions, no fees, no exceptions — a business moves up
by earning reviews, not by paying us. Refreshed monthly.
7 of 19 changed rank since Sep 6. See this month's movers.
See your name up there?
Claiming is free: your description, services, and correct hours on your profile. The rank stays earned either way.
Claim your listing — free