Case Study: Foundation Crack Repair to Stop Basement Water Intrusion in Waterloo

Location: Waterloo, Ontario
Client: The Davison Family
Service: Foundation crack injection and sealing
Problem: Basement water seepage through a visible wall crack

The Challenge

The Davison family noticed water streaks forming along one side of their basement wall after multiple heavy rains. Over time, the affected area developed signs of mold and began soaking the carpet near the base of the wall.

Upon inspection, a vertical crack in the poured concrete foundation wall was identified as the point of entry. The crack had likely formed due to soil shifting and thermal expansion common in Waterloo’s seasonal climate. Although small, it allowed water to seep in during high-moisture conditions.

Our Solution

Direct Waterproofing recommended a high-pressure polyurethane injection to seal the crack from the interior and prevent further water penetration.

Scope of Work:

• Crack Cleaning & Prep: Removed loose concrete and debris around the crack for proper bonding.
• Injection Ports Setup: Installed a series of injection ports along the length of the crack.
• Polyurethane Injection: Pressurized polyurethane resin was injected to fill the crack entirely and expand within the wall, forming a watertight seal.
• Surface Sealing: Finished with a surface epoxy seal to protect the repair zone and prevent future deterioration.
• Moisture Testing: Verified the repair’s integrity using a moisture meter following simulated water pressure.

The Result

The repair completely eliminated water intrusion through the cracked wall. The family has since reinstalled their flooring and reported no recurrence of leaks during storms. Indoor air quality also improved, and no additional mold growth has occurred.

Client Feedback

“This was a simple and affordable fix that solved a big problem. We’re thankful Direct Waterproofing acted quickly and kept us informed every step of the way.”
— Mrs. Davison, Waterloo

Need Foundation Crack Repair in Waterloo?

If you notice cracks or moisture near your basement walls, don’t wait for the problem to worsen. Visit our Waterloo Basement Waterproofing page or contact us to request your free on-site consultation.