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London · updated August 2026

Waterproofing Contractors in London: the standings

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

Featured slot — open

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

  1. 1
    Advanced Basement Systems
    ★★★★★ 4.9 · 191 reviews · London · (226) 271-8708
  2. 2
    ROYAL RESTORATION EPOXY FLOORS & CONCRETE RESURFACING
    ★★★★★ 5 · 166 reviews · London · (519) 859-6905
  3. 3
    A1 Waterproofing
    ★★★★★ 4.6 · 99 reviews · London · (519) 495-6060
  4. 4
    Koala Insulation of London
    ★★★★★ 5 · 58 reviews · London · (226) 774-3802
  5. 5
    Restore, Renovate, Build (formerly Restoration 1 London)
    ★★★★★ 4.8 · 68 reviews · London · (226) 667-9766
  6. 6
    Basement Waterproofing London
    ★★★★★ 5 · 45 reviews · London · (647) 494-4801
  7. 7
    Power Foundation Systems Ltd
    ★★★★★ 4.7 · 52 reviews · London · (519) 298-0478
  8. 8
    Ashworth Drainage
    ★★★★★ 4.6 · 36 reviews · London · (519) 660-9375
  9. 9
    Classic Basement Waterproofing London
    ★★★★★ 4.8 · 25 reviews · London · (646) 698-4279
  10. 10
    London Wisecracks
    ★★★★★ 4.8 · 25 reviews · London · (519) 520-9144
  11. 11
    Aquatech Basement Waterproofing London
    ★★★★★ 5 · 20 reviews · London · (226) 641-0771
  12. 12
    RCC Waterproofing London
    ★★★★★ 4.6 · 25 reviews · London · (519) 488-1406
  13. 13
    West Key Builders, Parging, Concrete Contractor.
    ★★★★★ 4.6 · 21 reviews · London · (519) 777-8171
  14. 14
    Lord’s Mate INC
    ★★★★★ 5 · 15 reviews · London · (519) 701-5507
  15. 15
    Basement Waterproofing Pros
    ★★★★★ 4.8 · 8 reviews · London · (519) 805-2515
  16. 16
    Basement Waterproofing Solutions
    ★★★★★ 5 · 5 reviews · London · (519) 319-8208
  17. 17
    Stopleak Basement Waterproofing Unclaimed
    ★★★★★ 5 · 5 reviews · London · (519) 661-9424
  18. 18
    AJN Waterproofing Unclaimed
    ★★★★★ 5 · 2 reviews · London · (519) 319-1323
  19. 19
    London Caulking and Installation Services
    ★★★★☆ 3.7 · 3 reviews · London · (519) 268-1173
How the standings work. Rank = Google rating × review volume, observed for the London 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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