Wet Basement & Waterproofing in Nepean, Ottawa

12 waterproofing companies serve Nepean in Ottawa, including Wet Basement Solutions, The Foundation Experts Inc., and Coliseum Concrete & Interlock. 11 of them carry a sourced public rating, averaging 4.8 stars; the highest-rated is Wet Basement Solutions at 5.0 stars from 126 reviews. Compare their ratings, service areas, and contact details before choosing who to contact.

Typical Ottawa cost: Priced per crack for injection, or per project for interior or exterior work12 serving Nepean11 rated on GoogleLast reviewed July 2026

Also covers in Nepean: Wet basement · Leaky basement · Foundation crack repair · Sump pumps · Drainage

Serving Nepean

Basement Waterproofing that cover Nepean

Every waterproofing company below lists Nepean in its Ottawa service area. Compare ratings and services, then contact the business directly.

  1. FeaturedClaimed

    Wet Basement Solutions

    Kanata +7

    5.0(126)on GoogleChecked Aug 2026Basement Waterproofing

    Waterproofing and foundation-repair company established in 2008, based in Carleton Place and serving the Ottawa Valley and Eastern Ontario. Offers a lifetime warranty and free quotes.

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  2. The Foundation Experts Inc.

    Orléans +3

    5.0(27)on GoogleChecked Jul 2026Basement Waterproofing

    Ottawa foundation-repair and waterproofing company operating since 1995 and BBB A+ accredited. Offers a 25-year transferable warranty on waterproofing work.

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  3. Coliseum Concrete & Interlock

    Nepean

    4.8(124)on GoogleChecked Aug 2026Concrete & Masonry

    Coliseum Concrete & Interlock is a concrete contractor in Nepean, Ottawa. Rated 4.8 from 124 Google reviews.

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  4. Dr. Pipe Drain and Plumbing

    Barrhaven +4

    4.9(70)on GoogleChecked Aug 2026Plumbers

    Dr. Pipe Drain and Plumbing is a plumber in Ottawa offering bathroom renovation, drainage and hot water systems. Rated 4.9 from 70 Google reviews.

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  5. Just Foundations

    Barrhaven +8

    5.0(13)on GoogleChecked Aug 2026Basement Waterproofing

    Just Foundations is a waterproofing service in Ottawa. Rated 5 from 13 Google reviews.

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  6. Kavanagh Masonry

    Barrhaven +8

    5.0(23)on GoogleChecked Aug 2026Concrete & Masonry

    Kavanagh Masonry is a masonry contractor in Stittsville, Ottawa. Rated 5 from 23 Google reviews.

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  7. Medusa Stoneworks

    Nepean

    4.9(48)on GoogleChecked Aug 2026Fencing

    Medusa Stoneworks is a fence contractor in Nepean, Ottawa offering concrete work and landscape design. Rated 4.9 from 48 Google reviews.

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  8. Mr. Foundation Inc.

    Gloucester +3

    4.4(82)on GoogleChecked Aug 2026Basement Waterproofing

    Ottawa foundation and waterproofing contractor operating since 1992, offering a 10-year transferable written warranty. Handles basement waterproofing, foundation crack and structural repair, and crawl space encapsulation.

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  9. Ottawa Structural Residential Services Ltd

    Nepean

    4.1(23)on GoogleChecked Aug 2026Basement Waterproofing

    Ottawa Structural Residential Services Ltd is a foundation in Nepean, Ottawa offering waterproofing. Rated 4.1 from 23 Google reviews.

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  10. Pro-Core Foundations

    Kanata +7

    5.0(15)on GoogleChecked Aug 2026Basement Waterproofing

    Foundation repair and waterproofing company serving Ottawa, Gatineau and Kingston. Covers interior and exterior waterproofing, crack repair, weeping tile and flooded-basement solutions.

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  11. The Foundation Guys Inc.

    Nepean +4

    4.3(208)on GoogleChecked Aug 2026Basement Waterproofing

    Long-running basement waterproofing and foundation-repair firm serving the greater Ottawa region since 1978. Offers a transferable lifetime dry-basement warranty.

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  12. iBasements

    Nepean +2

    Basement Waterproofing

    Ottawa-area waterproofing company covering interior and exterior basement waterproofing, weeping tile, sump pumps and backwater valves. Provides a 3-year labour warranty and free online quotes.

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Before you hire in Nepean

Do you need a permit for basement waterproofing in Nepean?

In Ottawa damp proofing an existing basement does not require a building permit.

Underpinning, lowering a floor or altering structure does. Exempt from a building permit still means the work must comply with the Ontario Building Code and any applicable law, such as the Zoning By-law.

Designated heritage buildings and properties inside a Heritage District Overlay are not covered by these exemptions, and the City asks owners to confirm with a Building Client Service Centre before starting.

Source: City of Ottawa: Projects not requiring Building Permits. Confirmed 2026-08-23. Thresholds change, so check before you build.

Common questions

Basement Waterproofing in Nepean, answered

How many waterproofing companies serve Nepean?
12 waterproofing companies currently list Nepean as a service area. 11 of 12 carry a sourced public rating, averaging 4.8 stars.
Which waterproofing company in Nepean has the highest rating?
Wet Basement Solutions has the highest sourced rating among waterproofing companies serving Nepean: 5.0 stars from 126 Google reviews. Listings claimed by their owner appear first; all other positions follow the published rating methodology.
What does waterproofing company work typically cost in Nepean?
Typical Ottawa-wide cost for this work: Priced per crack for injection, or per project for interior or exterior work. Get a written quote from a waterproofing company serving Nepean directly, since exact pricing depends on the job.

Hiring in Nepean

Choosing a waterproofing company in Nepean

Nepean is a large, established area in Ottawa's central-south, covering neighbourhoods like Barrhaven's northern edge, Bells Corners, and Centrepointe. Its housing stock skews older than the newer suburbs, so renovations, roof and window replacements, basement waterproofing, and mature-tree work are all common here. Central Nepean's location makes it easy to reach for most Ottawa service businesses, including those below.

  • Central-south Ottawa
  • Established, older housing stock
  • Common jobs: renovations, roofing, waterproofing, tree work
All basement waterproofing in OttawaAll services in Nepean

  • Diagnosis before sealing

    Sealing a wall without finding the source often just moves the leak. A good contractor traces whether it is grading, weeping tile, or a crack before quoting a fix.

  • Interior vs exterior waterproofing

    Interior systems manage water that gets in; exterior excavation stops it at the wall. They solve different problems at very different costs. Ask which your situation actually needs.

Basement Waterproofing in nearby areas

Other trades serving Nepean

For homeowners

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