Certified Foundation Repair Experts in Montreal
Protecting Montreal homes from water infiltration and structural damage for 12+ years.
RBQ certified · SOPREMA certified applicator · Free inspection, no obligation.
Foundation Repair Services in Montreal
From emergency water infiltration to full French drain installations — our certified team handles every foundation challenge in the Greater Montreal area.
French Drain Installation
Interior and exterior perimeter drainage systems. SOPREMA-certified installation with minimal excavation — ideal for densely built Montreal neighbourhoods.
Foundation Crack Repair
Polyurethane and epoxy injection for hairline and structural cracks. Permanent sealing from the inside — no exterior excavation required in most cases.
Basement Waterproofing
Interior membrane waterproofing systems using SOPREMA materials. The industry gold standard for Quebec foundations — comes with manufacturer warranty.
Foundation Wall Repair
Structural reinforcement and stabilization for bowing, cracking, or settling foundation walls. We diagnose root causes, not just symptoms.
Garage Floor Drains
Custom drain installation in galvanized metal. We cut, remove, and reinstall with proper slope and drainage — a Sous-Sols Experts specialty.
Emergency Water Infiltration
Active leak in your basement? We locate the source fast, stop the water, and document the damage in full for insurance purposes.
Why Montreal Homeowners Choose
Sous-Sols Experts
We've repaired 500+ foundations across Greater Montreal. Here's what separates us from other contractors.
SOPREMA Certified Applicator
SOPREMA is the gold standard in Quebec foundation waterproofing. As certified applicators, the materials we install come with a manufacturer warranty — not just our word. Many contractors use cheaper alternatives. We don't.
12+ Years Montreal Experience
We know every neighbourhood's soil conditions, the seasonal freeze-thaw patterns that crack Montreal foundations, and the building codes for every borough. Local knowledge isn't a slogan — it's what prevents mistakes.
Greater Montreal Coverage
We cover the full Greater Montreal area: Île de Montréal, Laval, South Shore, West Island, and Repentigny. If you're a Montreal homeowner, we come to you — no extra travel fees for most zones.
Fully Bilingual Team
Full service in English and French. You'll understand exactly what's happening at every stage of your project. No misunderstandings, no surprises. This matters when you're spending $10,000+ on your home.
Our Foundation Repair Process
Four clear steps from first call to finished project. No guesswork, no surprises.
Free Inspection & Diagnosis
Our certified technician visits your property, identifies the root cause of your water issue, and documents everything with photos and measurements.
Written Quote
Detailed, itemized written quote within 24 hours. You see exactly what we'll do, which materials we'll use, and what it costs. No surprises, no hidden fees.
Professional Installation
SOPREMA-certified installation by our own in-house team. We never subcontract your foundation work. Same team you met at inspection does the job.
Post-Work Walkthrough
We walk you through every inch of the completed work, provide your warranty documentation, and answer all your questions before we leave.
What Our Clients Say
Real reviews from Montreal homeowners who've trusted us with their foundation.
Pietro di Benedetto and Sous-Sols Experts provided the best possible solution to my foundation problems. The work included excavation, a reinforcing concrete wall, waterproof sealing, a French drain, sump pump, and a new exterior stairwell drain that solved problems I'd had for over thirty years. All completed to a very high standard, and at exactly the price promised.
Pietro is one of the most honest, trusting professionals I have ever come across. His work is impeccable — garage floor, sump pump, new drains, all done to the highest of standards. There was no cutting corners and no BS. You are appreciated by me and my family.
I was highly impressed with Sous-Sols Experts. Mr. Di Benedetto met his deadline, his team was courteous, did a good job, and cleaned up afterward. I am very pleased with the result. I strongly recommend them for any water-related issues.
Foundation Repair Across Greater Montreal
Our certified team serves the entire Greater Montreal region. Don't see your city? Call us — we likely cover it.
Get Your Free Foundation Inspection
No obligation. A certified technician will contact you within one business day to schedule your free on-site inspection anywhere in Greater Montreal.
Frequently Asked Questions
Everything you need to know about foundation repair in Montreal.
Get Your Free Foundation
Inspection Today
Join 500+ Montreal homeowners who've trusted us with their foundation. No obligation, same-day availability in most areas.