Home
Home Waterproofing Services in Thornhill
Winter prep starts now! Book a FREE basement inspection today, speak with our contractors and receive custom waterproofing solutions that will protect your Thornhill home from the snow, ice and rain.
Basement Waterproofing Services in Thornhill
Is your basement leaking, growing mold, or recently flooded? No matter if you’re near Yonge Street, German Mils, or Beverly Glen, the shifting sandy loam and clay loam soils can cause moisture problems to turn into costly damage if ignored. At DGI Waterproofing, we help homeowners with proactive home waterproofing solutions. We specialize in long-term, custom-tailored plans that stop water damage before it happens, like waterproofing your new home or installing weeping tiles systems.
- Free Assessment: We come to your home, assess the issue, and clearly explain what’s causing the problem.
- Personalized Plan: We build a solution around your basement’s layout and specific water concerns.
- Expert Service: From epoxy injections to restoring your basement from a flood, we do it all quickly and safely.
- Final Checks: We walk through the work with you so you understand exactly what was done and why.
How Much Does It Cost To Waterproof Thornhill Basements?
We offer honest, transparent pricing for our waterproofing services. They are priced per linear foot, making it easy to get budget-friendly, customized basement waterproofing that gives you what you need. We believe in transparency and fair pricing, so you’ll always know what to expect when you book with DGI Waterproofing.
| Service | Cost | |
|---|---|---|
| 1 | Exterior Waterproofing | $50 – $300+ per linear ft. (Cost depends on depth and access)* |
| 2 | Interior Waterproofing | $50 – $200 per linear ft.* |
| 3 | Waterproofing Foundation Cracks | $1500-$3000 (Cost depends on width and depth)* |
| 4 | Basement Waterproofing | $6 to $8 per sq. ft. (Cost depends on materials and company)* |
| 5 | Mould Remediation | $1000 – $100,000* |
| 6 | Waterproofing Newer Homes | $2.75 – $4 per sq. ft. * |
*Please note that all prices are approximate and may vary based on the specifics of a project.
Waterproofing & Water Damage Solutions in Thornhill
Looking for reliable waterproofing solutions for your home? Take a look at our extensive waterproofing services to see how DGI Waterproofing can help protect your property no matter the time of year.
2025 Waterproofing Rebates
You might not realize there are financial incentives out there that can help ease the cost of waterproofing. Even though Thornhill doesn’t run its own basement waterproofing rebate program, being part of the GTA opens the door to the City of Toronto’s Basement Flooding Protection Subsidy Program.
Sump Pump Installation Rebate
Homeowners can claim up to 80% of the installed cost (up to $1,750) for a qualifying sump pump installation, including the cost of materials, labour, and even applicable taxes.
Weeping Tile Disconnection & Capping
This helps reduce the amount of groundwater entering the municipal system, and lowers your risk of basement flooding in the process. The subsidy covers up to $400 (80% of the cost) for this work when done in combination with a sump pump or backwater valve installation
Soil Type in Thornhill & How It Affects Local Waterproofing Services
The city’s unique geography means homeowners deal with a mix of sandy loam and clay loam soil, with both of them differently affecting how water moves around your foundation.
Sandy loam doesn’t let water pool up, and actually drains very well, but can still cause issues over time. As the soil expands and contracts with the changing weather, it may shift slightly. Sometimes pulling away from your foundation leaving gaps, or creating small cracks in basement walls or floors. While it might not seem like a big deal, excess groundwater loves to go through them.
In other parts of the city, clay loam soil is more common. Clay holds onto moisture and expands when wet, putting pressure on basement walls, which can cause damage to your foundation. When it dries out, it shrinks, leaving gaps that let water migrate toward your foundation.
Applicable Waterproofing services
- Sump Pumps: A reliable sump pump keeps basements dry during heavy rain by handling excess water.
- Exterior Waterproofing Membranes: It acts as a shield,preventing groundwater from getting in.
- Water Damage Restoration: If it’s already too late and your basement is flooded, we can restore it quickly.
Factors That can Affect Waterproofing Costs
The cost of waterproofing a basement depends on several factors that are unique to your home. Keeping in mind like how old your home and drainage system are, or the kind of soil that surrounds your foundation can greatly affect how often you need waterproofing, and what specific service you need.
- Foundation Size: Larger basements have more surface area to cover or need more work done, so naturally that would increase the costs since it’s more intense.
- Damage from Surrounding Soil Type: The mix of sandy loam and clay loam soils can affect your foundation, clay can push against walls and cause bowing or cracks, while shifting sandy loam may create gaps that let water in.
- Presence of Mould: Addressing mould growth requires additional steps like remediation and air quality testing, which can add to the overall cost but are crucial for a healthy, long-term solution.
- Improper Drainage: Homes without proper interior or exterior drainage systems, or with very old systems that needs an update, may need upgrades before waterproofing can begin.
Watch Our Team Work
How We Can Prevent Future Water Damage
Where the soil can shift with the seasons and heavy rain often bring lots of groundwater, staying ahead of water damage means being proactive, not just reacting when you notice dampness or leaks.
- Install a French Drain System: A properly installed interior or exterior French drain helps redirect groundwater away from your foundation, especially useful in areas where clay soil holds moisture and creates hydrostatic pressure.
- Patch Those Foundation Cracks: Even small cracks in concrete walls or floors can let unwanted water in, so fixing them before they’re an issue is key.
- Install or Upgrade Weeping Tile: If your system is outdated or clogged, upgrading it helps prevent water from pooling around your foundation during heavy rain or snowmelt.
- Schedule Drain Pipe Cleaning & Snaking: People often forget that their drain pipes can get clogged, so make sure you regularly clean and snake your drain pipe to prevent water from backing up into your home.
Your Trusted Partner for Basement Waterproofing in Thornhill
Don’t let water damage compromise your property’s integrity. Contact us today for expert waterproofing services or water damage restoration services! Protect your home and commercial space from the next rainfall and ensure a dry, secure environment.