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Foundation Crack Repair in Montreal
Foundation cracks are a common issue for homes across Montreal due to freeze–thaw cycles, soil movement, and water pressure around the foundation. Even small cracks can allow water to enter your basement, cause mold growth, weaken the structure, and lead to costly long-term damage.
Tross Construction provides professional foundation crack repair using advanced, long-lasting methods that permanently stop leaks and protect your home.
Permanent Solutions for Leaking or Structural Cracks
Every crack is different — and so is the repair method. We use proven, long-lasting solutions tailored to the type and severity of the crack, ensuring maximum protection and durability.
Epoxy Injection
Epoxy injection is used for structural cracks that require strength and reinforcement.
This method bonds the concrete back together, restoring the original structural integrity.
Benefits:
Permanent structural repair
Hardens stronger than concrete
Ideal for horizontal or wide cracks
Prevents future widening
Polyurethane Injection
Polyurethane injection is the best solution for leaking or active water cracks.
This material expands within the crack to fill every gap and create a flexible, waterproof seal.
Benefits:
Stops water leaks instantly
Expands up to 20x its size
Flexible and moves with the concrete
Perfect for Montreal’s freeze–thaw cycles
Exterior Crack Repair
For severe or recurring cracks, we repair the crack from outside the foundation.
The process includes:
Excavating around the crack
Cleaning the exterior wall
Sealing the crack externally
Applying a waterproof membrane
Installing drainage protection
Best for:
Deep cracks
Repeated water entry
Older foundations
Severe structural issues
Signs of Foundation Cracks
Your foundation may need repair if you notice:
Water-Related Signs
Water leaking through walls
Damp or wet spots
Basement puddles
Efflorescence (white residue)
Structural Signs
Horizontal or widening cracks
Stair-step cracks in block walls
Uneven floors
Bowing or bulging walls
Moisture & Air Quality Signs
Musty smell
Mold or mildew
High humidity
If these symptoms are ignored, cracks can grow larger, deeper, and more expensive to fix.
Our Repair Process
We follow a detailed, professional method to ensure your crack is repaired permanently.
1. Inspection & Diagnosis
We inspect the crack’s depth, width, pattern, and water activity.
2. Selecting the Right Repair Method
Based on the crack type, we choose epoxy, polyurethane, or exterior sealing.
3. Preparing the Crack
We clean the surface, drill injection ports, and create channels for resin flow.
4. Injecting the Material
Epoxy for structural reinforcement
Polyurethane for waterproof sealing
Both methods cure inside the crack for a long-lasting repair.
5. Exterior Repair (If Needed)
For severe cases, we excavate and waterproof from outside.
6. Final Testing & Quality Check
We ensure there are no leaks or weak points remaining.
Why Choose Us
Specialists in Montreal foundation problems
Permanent epoxy & polyurethane repairs
Solutions designed for Canadian weather conditions
Fast repair times (usually 1–3 hours)
Exterior and interior crack repair available
Transparent, fair pricing with no hidden fees
Warranty options for peace of mind
Frequently Asked Questions
Some are minor, but any crack that leaks water should be repaired immediately.
Interior injection works for most cracks. Exterior repair is recommended for major or recurring leaks.
Epoxy and polyurethane injections can last 20+ years.
Most crack repairs take 1–3 hours.
No — proper injection seals the crack permanently.
Strength you can see. Quality you can trust.
Licence RBQ #5841923501
Tross Construction Inc. is a company specializing in interior and exterior renovation projects, masonry, concrete and everything related to finishing work.
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Montréal (QC) Canada
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