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Basement Waterproofing in Montreal
A wet basement is more than an inconvenience — it can damage your home’s structure, lead to mold growth, reduce property value, and create serious health risks. With Montreal’s frequent rain, snowmelt, and freeze-thaw cycles, basement leaks are extremely common.
At Tross Construction, we provide professional basement waterproofing services designed to keep your home dry, safe, and protected year-round.
Whether you’re dealing with water seepage, foundation cracks, high humidity, or full basement flooding, our team delivers reliable interior and exterior waterproofing solutions built for long-term performance.
Complete Basement Waterproofing Solutions for Your Home
Every home is different, so our waterproofing services are customized based on the type of water intrusion, foundation condition, and soil structure. We offer complete waterproofing that targets the problem from every angle.
Interior Basement Waterproofing
Ideal for managing water that enters through walls or floors. We install:
Interior weeping tile systems
Drainage channels
Vapor barrier wall systems
Sump pumps
Moisture barriers
Anti-mold coatings
This solution is perfect when excavation is not possible or when interior moisture control is needed.
Exterior Basement Waterproofing
The most comprehensive method — stops water before it reaches the foundation. This includes:
Excavation around the foundation
Installation of waterproof membranes
Foundation wall sealing
Exterior weeping tile systems
Gravel drainage layers
Protective insulation panels
Exterior waterproofing offers long-term peace of mind and protects the home from the outside in.
Foundation Crack Repair
Cracks in concrete foundations allow water to enter. We repair cracks using:
Epoxy injection
Polyurethane injection
Exterior crack excavation and sealing
These methods create a permanent waterproof barrier.
Sump Pump Installation & Replacement
Sump pumps remove water before it floods your basement. We install:
Primary sump pumps
Backup sump pumps
Battery-operated emergency pumps
A proper sump pump system protects your home during heavy rainfall or snowmelt.
French Drain Installation
French drains redirect water away from your foundation using a gravel-filled trench and perforated pipe.
We install both:
Interior French drains
Exterior French drains
They help prevent flooding, mold, and water pressure against your foundation.
Signs Your Basement Needs Waterproofing
If you notice any of the following, your basement likely needs immediate attention:
Water-Related Signs
Damp or wet basement floors
Water stains on walls
Pooling water after rain
Dripping from foundation walls
Air & Odor Indicators
Musty or moldy smell
High humidity
Condensation on windows or pipes
Structural Warning Signs
Cracks in walls or floors
Bowing basement walls
Deteriorating concrete
Efflorescence (white powder on walls)
Health Indicators
Mold growth
Allergies getting worse
Respiratory issues
Montreal’s climate makes basements particularly vulnerable — addressing these issues early can save expensive repairs later.
Our Basement Waterproofing Process
1. Detailed Inspection & Moisture Assessment
We begin by identifying the source of water intrusion using:
Moisture meters
Visual inspection
Drainage evaluation
Foundation crack analysis
This helps us design a custom waterproofing plan.
2. Waterproofing Plan & Material Selection
We explain all possible solutions and help you choose the most cost-effective and long-lasting method.
3. Interior or Exterior Waterproofing Installation
Depending on your home’s needs, our team performs:
Membrane installation
Drainage system setup
Crack injections
All work is performed with strict attention to safety and building standards.
4. Final Testing & Quality Check
We ensure that the waterproofing system works perfectly before we complete the project.
5. Cleanup & After-Service Support
Your basement will be left clean, safe, and fully protected — and our team remains available for support if needed.
Why Choose Us for Basement Waterproofing in Montreal?
Specialized Waterproofing Experts
We have years of experience dealing with Montreal’s water, soil, and drainage issues.
Long-Lasting Waterproofing Systems
We install premium membranes, drains, and sealants that provide durable protection.
Full Interior & Exterior Solutions
Whether you need a minor fix or a complete exterior rebuild, we handle it all.
Mold & Moisture Prevention
Our waterproofing methods protect your family’s health.
Transparent Pricing
You receive a detailed quote with no hidden fees.
Fast & Professional Service
We complete work efficiently while maintaining exceptional standards.
Interior vs. Exterior Waterproofing — Which One Do You Need?
Interior Waterproofing is Ideal If:
Your basement has minor water seepage
You have high humidity or condensation
Excavation is not possible
You need a budget-friendly solution
Exterior Waterproofing is Essential If:
Water is penetrating foundation walls
Cracks are visible from the outside
Soil drainage is poor
You want long-term protection
You own an older Montreal home
Our team will help determine the best method during the inspection.
Additional Waterproofing Services
Basement Dehumidification
Removes humidity and prevents mold.
Weeping Tile Replacement
Old clay drains often fail — we replace them with modern perforated systems.
Drainage Correction & Grading
We reshape the land around your home to prevent water buildup.
Vapor Barrier Instalation
Protects walls from interior moisture.
Frequently Asked Questions
Interior waterproofing: 1–3 days
Exterior waterproofing: 3–10 days
Yes — we provide warranty options depending on the system installed.
Interior waterproofing can be done year-round.
Exterior waterproofing depends on weather and ground conditions.
Common causes include:
Freeze–thaw expansion
Heavy rainfall
Poor drainage
Soil pressure
Aging foundations
Absolutely. A dry basement significantly improves resale value and home safety.
Protect Your Home with Professional Waterproofing
If you’re experiencing basement leaks, moisture, or flooding, now is the time to act. Tross Construction provides reliable, long-lasting waterproofing systems that keep your home dry and safe.
Contact us for a free waterproofing inspection
Serving Montreal and surrounding areas
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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