If you’re seeing a crack in your basement wall—or you’ve noticed dampness, staining, or water seepage after rain—don’t ignore it. Foundation cracks can allow moisture in, damage finishes, and worsen over time as the soil around your home expands and contracts through Ontario’s seasons.

At Concrete Crack Injections, we provide professional foundation crack repair in Toronto and the GTA, including crack injection for poured concrete foundation walls. Our goal is simple: stop the leak, seal the crack properly, and help protect your home’s structure with a repair that’s built to last.

Call (800) 371-5302 for a free on-site estimate.

Why Foundation Crack Repair Matters

Foundation cracks aren’t just cosmetic. Even small cracks can become a pathway for water intrusion and create bigger problems inside your basement over time. Repairing foundation cracks early can help you:

• Prevent basement leaks and water seepage
• Reduce musty odours and moisture conditions
• Protect framing, insulation, and finished basement materials
• Help avoid costly mold and restoration work
• Maintain your home’s value and curb appeal

Common Causes of Foundation Cracks in Toronto & the GTA

Many GTA homes experience cracking due to local conditions and normal structural movement. Common causes include:

• Soil movement and settlement (especially in clay-heavy areas)
• Freeze–thaw cycles that expand/contract the ground
• Hydrostatic pressure from saturated soil after heavy rain or snowmelt
• Concrete shrinkage as foundation walls cure
• Drainage issues (grading, downspouts, window wells, pooling water)

Types of Foundation Cracks We Repair

Not every crack is the same. During your inspection, we identify the crack type, whether it’s active, and the best repair method.

Vertical Foundation Cracks

Often caused by settlement or shrinkage. These are commonly repairable with polyurethane crack injection if leaking or at risk of leaking.

Diagonal Cracks

Can occur from differential settlement. These may be repairable with injection depending on severity and movement.

Horizontal Cracks

Horizontal cracking can indicate higher pressure on the wall. These require a careful assessment to determine whether additional structural support or waterproofing strategy is needed.

Block Foundation Cracks / Step Cracks

Mortar joint cracking in block foundations can leak and may need a different approach than poured concrete injection.

Crack Injection vs Other Repair Methods

Polyurethane Crack

Injection (for leaking cracks)

Polyurethane is commonly used when there’s active water seepage. It’s designed to penetrate the crack and seal water pathways to help stop leaks from the inside.

Epoxy Crack Injection (for structural bonding)

Epoxy can be used when the goal is strong structural bonding in certain non-leaking or structural situations.

We choose the material based on crack type, moisture conditions, and the repair goal.

Our Step-by-Step Foundation Crack Repair Process

1. On-site inspection
   We locate the crack, assess severity, check moisture entry points, and confirm the right method.
2. Surface preparation
   We clean and prep the area for a strong bond and proper injection.
3. Port installation & sealing
   Injection ports are installed and the crack surface is sealed to direct material into the crack.
4. Pressure injection
   We inject polyurethane or epoxy (depending on the situation) to fill the crack depth and seal the pathway.
5. Finish & cleanup
   Ports are removed (when applicable), the area is finished, and we leave the site clean.
6. Review & recommendations
   We explain what we repaired and recommend any drainage or waterproofing improvements if needed.

How Much Does Foundation Crack Repair Cost?

Foundation crack repair cost depends on several factors, including:

• Crack length, width, and location
• Whether the crack is actively leaking
• Foundation type (poured concrete vs block)
• Accessibility (finished walls, tight mechanical areas, etc.)
• Whether there are multiple cracks or broader water entry issues

The best way to get an accurate price is a quick on-site assessment. We provide a clear scope of work and a competitive quote for the right repair.

Call (800) 371-5302 for a free on-site estimate.

Why Choose Concrete Crack Injections

• Experienced crew focused on crack repair and injection
• Modern tools and proven repair materials
• Clear communication and straightforward recommendations
• Work backed by warranty for peace of mind (ask for details during your estimate)