Basement Waterproofing in Ontario
Expert solutions to keep your basement dry, safe, and mold-free year-round.
Why Waterproof Your Basement?
A leaky basement can cause more than just inconvenience—it can damage your foundation, create unhealthy living conditions, and lower your home’s value. With Ontario’s heavy rainfall, melting snow, and seasonal changes, basement waterproofing is one of the best investments you can make in your property.
At GWC General Contractors, we provide professional basement waterproofing services across Ontario. Whether you’re dealing with leaks, damp walls, or flooding, we design solutions that address the problem at its source. From interior and exterior waterproofing to sump pump installations and foundation crack repairs, our team ensures your basement stays dry, safe, and functional.
- Prevent costly water damage and flooding
- Stop mold and mildew growth for healthier air
- Keep your basement dry and livable
- Increase your property’s resale value
- Protect your foundation for long-term stability
Types of Basement Waterproofing Services
Interior Waterproofing
Protects inside walls and floors from moisture.
Exterior Waterproofing
Stops water from entering by sealing the outside foundation.
Sump Pump Installation & Repair
Prevents water buildup and flooding.
Foundation Crack Repair
Seals cracks to stop water seepage.
Drainage System Upgrades
Improves water flow away from your foundation.
FAQ
Signs include damp walls, musty smells, water stains, or visible cracks in your foundation.
Interior waterproofing manages water inside the basement, while exterior waterproofing prevents water from entering through the foundation.
In many Ontario homes, sump pumps are recommended to prevent flooding during heavy rain or snowmelt.
With professional installation, waterproofing can last 20+ years depending on the method used.
A dry, usable basement adds value and attracts buyers.
Absolutely. Waterproofing creates a dry foundation that makes finishing safe and long-lasting.
Most projects take 2–7 days, depending on the scope of work.
Yes. Our waterproofing solutions come with long-term warranty coverage.
Our Waterproofing Process
Basement Waterproofing projects Completed
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- Inspection & Assessment – We check your basement for leaks, cracks, and drainage issues.
- Customized Plan – We design the right waterproofing solution for your home.
- Professional Installation – High-quality materials and skilled workmanship.
- Final Testing – We ensure your basement is fully protected and dry.