Case Study: Foundation Crack Repair to Stop Basement Leaks in Newmarket

Location: Newmarket, Ontario
Client: The Faulkner Family
Issue: Vertical crack in poured concrete foundation causing basement leaks
Service: Foundation crack repair with polyurethane injection and wall membrane application

The Challenge

The Faulkner family lives in a detached two-storey home in Newmarket’s Glenway area. After several rainstorms, they began noticing moisture along the rear basement wall and damp carpet near the baseboards. A closer inspection revealed a vertical crack in the poured concrete foundation, allowing water to seep through during heavy rainfall.

The homeowners had just finished renovating the basement and wanted a fast, non-invasive solution that would protect their investment without requiring exterior excavation.

Our Solution

Direct Waterproofing recommended a targeted interior crack repair solution using polyurethane injection and a vapor barrier to prevent future water intrusion—perfect for finished basements like the Faulkners’.

Repair Process:

1. Crack Identification & Wall Access: Opened a small section of drywall to expose the vertical crack.
2. Polyurethane Injection: Used high-pressure injection to fill the crack from the inside, allowing the polyurethane to expand and fully seal the gap.
3. Waterproof Membrane Application: Installed a dimpled membrane over the crack zone to direct any residual moisture into the home’s existing drainage system.
4. Restoration Coordination: Worked with the homeowner’s contractor to restore the drywall and flooring in the affected area.

The Result

The leak was eliminated, and the basement remained dry through several rainy weeks. The Faulkners were able to keep their new finishes intact and gained peace of mind knowing the issue was addressed permanently.

Client Testimonial

“Direct Waterproofing saved our newly finished basement. They explained everything clearly, worked quickly, and we haven’t had a drop of water since. Highly recommended for anyone in Newmarket dealing with foundation cracks.”
— The Faulkner Family, Newmarket

Frequently Asked Questions

1. What causes foundation cracks in Newmarket homes?
Freeze-thaw cycles, poor drainage, or soil movement around the foundation can lead to vertical or diagonal cracks. These can allow water to seep in during storms or spring thaw.

2. Is crack injection a long-term solution?
Yes. Polyurethane injection is flexible and expands to fill the crack fully, even if the foundation shifts slightly over time.

3. Do you need to dig outside to repair a crack?
Not always. Many cracks can be sealed from the inside using injection methods, which are faster, less disruptive, and perfect for finished basements.

4. Will this fix stop the leak completely?
Yes. Once the crack is sealed and protected with a membrane, it prevents water from entering and redirects any minor seepage to a sump or drain system.

5. How long does the repair take?
Most crack repairs are completed within one day.

If you’re in Newmarket and noticing signs of foundation cracks or basement moisture, visit our Foundation Repair Services or book your free consultation with Direct Waterproofing today.