Company Facts
Systèmes Sous-sol Québec at a Glance
The work
- Best for
- Montreal homeowners wanting a drain français and sump system with a lifetime transferable warranty
- Primary service
- Waterproofing
Where
- Headquarters
- Montreal, QC
- Service area
- Montreal
- Emergency service
- Not advertised
Money and guarantees
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Transferable lifetime warranty on perimeter drainage systems; written warranty with free evaluation
Credentials
- RBQ contractor licence
- 8359-3954-01 (reported by the company, not verified)
Editorial Review
Our Take on Systèmes Sous-sol Québec
This is the exclusive Quebec dealer for Basement Systems, which brings a standard product range and a transferable lifetime drain warranty that one reviewer saw honoured for a second owner. It is a large Laval firm, so expect a structured sales process rather than a small crew. Those wanting a warrantied drain and sump system with financing will find it a strong fit.
Best forMontreal homeowners wanting a drain français and sump system with a lifetime transferable warranty
What We Like
- Exclusive Quebec distributor of Basement Systems and Foundation Supportworks products
- Perimeter drainage carries a transferable lifetime warranty, honoured for a second owner per a review
- RBQ licence 8359-3954-01 listed on its accreditations page, plus APCHQ and CMMTQ membership
- Financeit financing up to 120 months for projects from $1,000 before tax
- Named team of dozens including design specialists, foremen and service technicians
Things to Consider
- Based in Laval, about 15 km north of downtown Montreal, not on the island
- Listed hours are Monday to Friday only, and no emergency service is stated
- Site says it supplies the sump pump for the client's plumber to install, while a review describes crew installation, so confirm scope
Customer Ratings
Google Reviews for Systèmes Sous-sol Québec
Customer ratings shown here come from Google. They are separate from our editorial review above.
Rating Distribution
- 5 stars91%
- 4 stars3%
- 3 stars1%
- 2 stars1%
- 1 star4%
iAbout this distribution
The distribution reflects the 1300 Google reviews available when this profile's review data was last refreshed on October 28, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.
Recent Google Reviews
Editorial Ranking
Why Systèmes Sous-sol Québec Made Our Top 7
It took first place in 7 Best Waterproofing Companies in Montreal, QC (2026).
Areas Served
Based in Montreal, QC.
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
Company Background
About Systèmes Sous-sol Québec
Systèmes Sous-sol Québec is the exclusive Quebec distributor of the Basement Systems and Foundation Supportworks product lines, and that affiliation shapes nearly everything about how it works. Michel Haydamous, an engineer who came to waterproofing from construction consulting, founded the company in 2007. It operates from 2990 Boul. le Corbusier in Laval, roughly 15 km north of downtown Montreal, and its own website names the Montreal metropolitan area as its home territory. Case studies and testimonials on the site include homes in Rosemont-La Petite-Patrie and Dollard-Des-Ormeaux, plus Brossard, Châteauguay, Chambly and the Richelieu valley.
The core work is basement waterproofing (imperméabilisation de sous-sol). That means interior perimeter drain français systems using WaterGuard, sump pump installations including TripleSafe and SuperSump models with battery backup, exterior drain options, FlexiSpan wall crack sealing, wall anchors and crawl space encapsulation. The site says most perimeter drain and sump jobs finish in under two days, and that perimeter drainage carries a transferable lifetime warranty. A reviewer named Tristan confirmed it in practice: he bought a house with a drain the company had installed for the previous owner, a rodent had blocked it, and the firm honoured the warranty. Other reviewers name Simon for a clear estimate visit, Cedrick as a tidy foreman, Frank for a triple-pump install, and Ghouti for a drain repair.
This is a large operation with dozens of staff, a named team of system design specialists, production foremen and service technicians. In practice you get a scheduled sales consultation and a crew, not a single tradesperson. The Google profile shows 4.8 from 1295 Google reviews, read October 21, 2026. The listed hours are Monday to Friday, 8:00 to 17:00, and no emergency line is stated.
It suits homeowners with seepage, a failed drain or an undersized pump who want a branded, warrantied system and financing, which the firm offers through Financeit for projects from $1,000 before tax. It suits less well anyone who wants a small one-day patch from an owner-operator, or urgent weekend help. Ask who installs the pump, since the site says it supplies the pump for the client's plumber while one reviewer describes the crew installing it. Also confirm what the annual maintenance plan involves. The site lists RBQ licence 8359-3954-01. Check it free at rbq.gouv.qc.ca, and ask about CNESST clearance and insurance.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Other Sources
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Pricing
Company Pricing & Estimates
What this company publishes about its own pricing.
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Transferable lifetime warranty on perimeter drainage systems; written warranty with free evaluation
Gallery
Project Photos
Business-submitted, reviewed by our editors
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Systèmes Sous-sol Québec FAQs
Is Systèmes Sous-sol Québec licensed in Montreal?
Its website lists RBQ licence 8359-3954-01 on the accreditations page. Quebec construction contractors must hold a Régie du bâtiment du Québec licence, and you can check this one free at rbq.gouv.qc.ca before signing. The site also lists membership in APCHQ, the Corporation des maîtres mécaniciens en tuyauterie du Québec, the Association de la construction du Québec and InterNACHI Québec. Ask for proof of CNESST clearance and liability insurance as well.
What are Systèmes Sous-sol Québec's hours, and do they do emergency work?
Google lists hours of Monday to Friday, 8:00 to 17:00, closed Saturday and Sunday. The website does not advertise 24-hour or emergency service, so call the office at +1 514-800-6406 and ask what is possible if water is already coming in. Free estimates and inspections are offered, and the firm's team includes a service department and a call centre for appointments.
Does Systèmes Sous-sol Québec offer a warranty and financing?
Yes. The site says its perimeter drain systems carry a transferable lifetime warranty, and one Google reviewer reported the company honoured it after buying the house from the original customer. Financing through Financeit runs up to 120 months for projects from $1,000 before tax, with early repayment allowed without penalty. Service covers the Montreal metropolitan area, Laval and the South Shore from its Laval office. Get the warranty terms in writing for your system.
Is Systèmes Sous-sol Québec licensed and insured?
We checked 0 of 3 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.
What areas does Systèmes Sous-sol Québec serve?
Montreal. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does Systèmes Sous-sol Québec offer emergency service?
Emergency availability is not listed for this company. If you need an urgent call-out, check the ranking for companies that do list it.
What warranty do they offer?
Transferable lifetime warranty on perimeter drainage systems; written warranty with free evaluation. There are usually two warranties on a job: the manufacturer covers materials, the contractor covers workmanship. Get both in writing and check whether the workmanship coverage transfers if you sell.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
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About This Business Profile
- Last reviewed
- October 2026
- Profile last updated
- November 11, 2026
- Google review data updated
- October 28, 2026
- Sources checked
- Issuing authorities, Google Business Profile, Company website
- Could not verify
- RBQ contractor licence (reported only), insurance
- Sponsorship status
- No commercial relationship