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Oshawa · updated August 2026

Waterproofing Contractors in Oshawa: the standings

20 waterproofing contractors serving Oshawa, ranked by Google rating and review count. The bar shows each one's review volume against the leader. Nobody can pay to move up.

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One labelled spot above these standings, reserved for a claimed Oshawa business. It never changes the ranking below. Claim your listing to take it.

  1. 1
    Logik Roofing & Insulation Oshawa
    ★★★★★ 4.9 · 468 reviews · Oshawa · (647) 930-5701
  2. 2
    Jetflo Drain & Waterproofing
    ★★★★★ 5 · 100 reviews · Oshawa · (416) 599-6889
  3. 3
    Durham Backhoe Basement Waterproofing
    ★★★★★ 5 · 81 reviews · Oshawa · (905) 926-2121
  4. 4
    Aquatech Basement Waterproofing Oshawa
    ★★★★★ 5 · 74 reviews · Oshawa · (647) 559-3367
  5. 5
    Koala Insulation of Durham
    ★★★★★ 5 · 72 reviews · Oshawa · (289) 312-7577
  6. 6
    Basement Waterproofing Pickering
    ★★★★★ 5 · 49 reviews · Ajax · (289) 670-9460
  7. 7
    Henley Contracting Ltd.
    ★★★★★ 4.8 · 50 reviews · Oshawa · (905) 576-9714
  8. 8
    Water Damage Oshawa
    ★★★★★ 5 · 41 reviews · Oshawa · (365) 906-3287
  9. 9
    Vortex Construction
    ★★★★★ 5 · 36 reviews · Oshawa · (647) 915-4742
  10. 10
    ACCL Basement Wateproofing
    ★★★★★ 5 · 33 reviews · Oshawa · (416) 619-5355
  11. 11
    Crawford & Son's
    ★★★★★ 4.8 · 23 reviews · Ajax · (905) 686-6880
  12. 12
    ACCL Waterproofing
    ★★★★★ 4.6 · 20 reviews · Oshawa · (905) 448-5909
  13. 13
    Duggans Waterproofing Inc
    ★★★★★ 4.6 · 19 reviews · Oshawa · (416) 817-7046
  14. 14
    Dryshield Basement Waterproofing Oshawa
    ★★★★★ 5 · 11 reviews · Oshawa · (289) 312-6063
  15. 15
    Ashpark Basement Waterproofing Contractors
    ★★★★★ 5 · 10 reviews · Oshawa · (800) 334-6290
  16. 16
    Phil's Caulking Company Ltd.
    ★★★★★ 4.6 · 11 reviews · Oshawa · (905) 436-8982
  17. 17
    Renovations•Remodels•Repairs
    ★★★★★ 5 · 7 reviews · Oshawa
  18. 18
    2 Dads Waterproofing Inc.
    ★★★★★ 5 · 4 reviews · Oshawa · (416) 990-4435
  19. 19
    Porch Perfect Coatings
    ★★★★★ 5 · 3 reviews · Oshawa · (289) 216-6899
  20. 20
    Durham Basement Technologies Inc.
    ★★★★★ 5 · 2 reviews · Oshawa · (905) 665-1585
How the standings work. Rank = Google rating × review volume, observed for the Oshawa area in August 2026. No submissions, no fees, no exceptions — a business moves up by earning reviews, not by paying us. Refreshed monthly.

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