Waterproofing near you in Canada
Known locally as waterproofing contractor. Compare researched prices and get free quotes from pros wherever you are in Canada.
Typical price: CA$700–CA$26,000
Free, no obligation. Sign in with Google to send your request.
What waterproofing costs in Canada
| Job size | Low | Typical | High |
|---|---|---|---|
| Damp proofing / sealant (small) Interior sealant or damp-proofing of a small area | CA$700 | CA$1,600 | CA$3,800 |
| Membrane / interior drainage system Cavity-drain membrane or weeping-tile and sump | CA$3,500 | CA$7,500 | CA$14,000 |
| Full basement / structural waterproofing Exterior excavation and membrane or full below-ground system | CA$7,000 | CA$13,000 | CA$26,000 |
Browse Canada by region
How to hire a waterproofing pro in Canada
- Get the water source diagnosed before choosing a system
- Match the method to the problem — interior sealant, exterior membrane or interior weeping-tile and sump
- Ask for a written scope, product spec and guarantee terms
- Confirm structural/excavation work is permitted and by a licensed contractor
- Check liability insurance and references
Frequently asked questions
Do I need a guarantee or warranty?
Yes — reputable structural waterproofing comes with an insurance-backed guarantee so the cover survives if the contractor ceases trading. Ask whether the guarantee is company-backed or independently insured, because a company-only warranty is worth little if they close.
Can I waterproof a basement myself?
Small sealant jobs on a minor damp patch are DIY-able, but below-ground waterproofing against groundwater pressure is specialist work — get it wrong and you trap water or flood the space. Full basement systems should be designed and installed by a qualified specialist.
How much does waterproofing cost?
It depends on the method and area. Internal sealants and damp-proofing for a small area are the cheapest option; cavity-drain membranes and tanking cost more; a full basement or below-ground waterproofing system is the most expensive, running into five figures. The cause of the water dictates the right system.
What's the difference between damp proofing and waterproofing?
Damp proofing resists moisture and rising damp (like a damp-proof course in a wall); waterproofing resists liquid water under pressure, as in a basement below the water table. Below-ground and wet-area work needs true waterproofing, not just a damp treatment.
Why is my damp problem being oversold?
A common trap is a 'free survey' that always diagnoses rising damp and sells a chemical damp-proof course, when the real cause is condensation, a leaking gutter or bridged damp course. Get an independent, qualified diagnosis before paying for injected chemicals.
What does basement waterproofing cost in Canada?
Interior systems commonly run CAD 3,500-14,000 and exterior excavation-and-membrane jobs CAD 7,000-26,000, with small damp-proofing tasks under CAD 3,800.
Related services
Planning a budget?
See the full waterproofing cost guide or browse all Canada price guides.
Free, no obligation. Sign in with Google to send your request.