Montreal’s Specialist for Basement and Foundation Water Protection
Welcome to MTL Waterproofing, where we stop water from damaging the property you have worked hard to own. We are a Montreal-based waterproofing and foundation protection company serving homeowners, landlords, and property managers across the island and the greater metropolitan area. Our licensed technicians diagnose and solve the full range of water infiltration problems — from wet basements and foundation cracks to failing drainage systems and moisture-damaged crawl spaces.
Montreal’s climate puts buildings under relentless pressure. The freeze-thaw cycles of our winters, spring snowmelt saturating the soil around foundations, and heavy summer rainfall all find their way through aging concrete, cracked mortar, and inadequate drainage. Left unaddressed, water infiltration leads to structural damage, mold, and the kind of remediation costs that far outweigh what prevention would have required. MTL Waterproofing exists to solve these problems correctly and permanently, in both French and English, for every type of residential and commercial property in our market.
Basement Waterproofing
We install interior and exterior waterproofing systems designed to stop water infiltration at its source, not just manage it after entry. Interior drainage systems, vapor barriers, and sump pump installations are configured to the specific water management needs of each property, with written guarantees on all work performed.
Foundation Crack Repair & Sealing
We repair concrete and masonry cracks using injection methods that seal the full depth of the crack — not just the surface. Our repair process is permanent, not cosmetic, and addresses the structural integrity of the foundation alongside the water infiltration issue.
Drainage System Installation
Poor exterior drainage is the cause of the majority of basement water problems we encounter. We correct exterior grade, install weeping tile systems, and address window well drainage to redirect water away from foundations before it has the opportunity to cause damage.
Why Choose MTL Waterproofing
We diagnose before we recommend. Every engagement begins with a thorough inspection of the property — foundation, drainage conditions, interior and exterior — to identify the actual source of water infiltration. We recommend only the solutions that address the cause, which means our work lasts rather than delaying the same problem by a season.
Written guarantees on every job. Our waterproofing installations come with documented, transferable guarantees. If water re-enters through an area we have treated within the guarantee period, we return and resolve it at no additional cost. That commitment reflects our confidence in the quality of our workmanship.
Bilingual service across Montreal. Our team operates in French and English. Estimates, contracts, and all client communication are available in your preferred language — because a contractor you can communicate clearly with is a contractor you can trust.
“MTL Waterproofing inspected our basement and found that two previous contractors had been treating the wrong problem. They fixed the actual drainage issue, and our basement has been completely dry through two winters since.”
— Bernard and Marie-Claire Tanguay, Rosemont Homeowners
“We manage a portfolio of plexes in the Plateau and have used MTL Waterproofing on four properties. The work is reliable, the pricing is transparent, and they show up when they say they will.”
— Alain Fortier, Property Manager, Montreal
Protect your property before water makes the decision for you.
Contact MTL Waterproofing for a no-obligation inspection and estimate. We will assess your property, explain exactly what we find, and give you a clear written quote with no hidden costs and no pressure to commit on the spot.
