Foundation Repair Experts in London, Ont
We service all foundation types & ages
Block Foundations
We Repair:
- Bowed Foundation walls
- Shifted walls
- Missing Mortar
- Cracked or Broken Blocks
Poured Foundations
We Repair:
- Horizontally Cracked Foundation Walls
- Settlement issues
- Missing, damaged or cracked concrete
Fieldstone Foundations
We Repair:
- Crumbling Foundations
- Deteriorated mortar
- Unstable Foundations
- Cracked walls
Brick Foundations
We Repair:
- Missing, cracked or unsound foundations
- Deteriorated mortar
- Unstable Foundations
- Apply Exterior Sealants
About A1 Waterproofing
The strength and durability of your home depend significantly on the integrity of its foundation, especially in the challenging soil conditions and variable weather patterns found across Ontario.
At A1 Waterproofing, we specialize in addressing the intricate challenges associated with Canadian foundations. With over 13 years of experience in the foundation repair sector, we have cultivated a comprehensive range of services designed to resolve any foundation concern, regardless of its magnitude.
Crumbling Foundation – Wortley Village
Structural cracks, bowing walls, or shifting foundations are serious — but fixable. A1 Waterproofing provides permanent, engineered foundation repairs that restore strength and stability to your home or building. Whether you’re dealing with horizontal cracking, settlement, or wall displacement, we’ll diagnose the problem, reinforce the structure, and stop further movement — guaranteed.
Signs your foundation needs to be repaired
Not every crack is a sign of structural damage, but certain issues — like horizontal cracks, cracks extending above the foundation, bowing walls, or uneven floors — can indicate a serious problem.
If you notice any of these warning signs, contact us for a professional foundation inspection.
Other Warning Signs to Look Out For:
Horizontal or stair-step cracks in concrete block walls
Walls bowing or leaning inward
Uneven or sloping basement floors
Foundation cracks wider than 1/8 inch
Doors or windows sticking or misaligned
Water leaking through foundation cracks
Gaps between walls and floors
Exterior brick or siding separation
Carbon Fibre Reinforcement (For Bowed or Cracked Walls)
We install structural-grade carbon fibre straps directly over cracks and weakened walls.
Each strap is epoxied and anchored to the top and bottom of the wall, preventing further inward movement while restoring stability — without major excavation or framing.
Benefits
Stops horizontal and stair-step cracking
Strengthens walls instantly
Clean, low-profile finish (paintable)
Lifetime transferable warranty
Structural Injection Using Epoxy
High-pressure epoxy and polyurethane injections seal active leaks and fuse concrete back together.
This process restores the wall’s integrity while stopping water intrusion at the source.
The injected materials penetrate deep into cracks, creating a permanent, flexible barrier that moves naturally with the foundation.
It’s a fast, non-invasive repair method that eliminates the need for excavation and provides long-term protection.
Benefits
Permanent structural bond
Seals both wet and dry cracks
Non-invasive – no digging required
Fast cure time – most jobs done same day
Wall Straightening & Structural Bracing
We install structural-grade carbon fibre straps directly over cracks and weakened walls.
Each strap is epoxied and anchored to the top and bottom of the wall, preventing further inward movement while restoring stability — without major excavation or framing.
For advanced foundation movement or severe bowing, A1 Waterproofing uses engineered steel I-beam bracing and hydraulic correction systems to gradually restore wall alignment and prevent collapse.
These systems are custom-fit to your foundation and anchored securely to provide long-term structural reinforcement.
Benefits
Gradual, controlled correction
Permanent reinforcement
Approved for residential and commercial applications
Includes engineer review and warranty documentation
Wall Straightening & Structural Bracing
Benefits
- Gradual, controlled correction
- Permanent reinforcement
- Approved for residential and commercial applications
- Includes engineer review and warranty documentation
Fast Resonse & Quick Turnaround
We understand foundation problems can’t wait. That’s why A1 Waterproofing responds fast — quotes for urgent cases are provided within 48 hours, and repairs are booked promptly after approval. Our in-house crews and local supply partners allow us to complete most foundation crack repairs within 1–3 business days of approval, depending on project scope. You’ll get confirmed scheduling, clear communication, and work completed on time — every time.
rEASONS YOUR CONCRETE MAY BE FAILING
1. Poor quality of raw material
Concrete is made up of cement, water, aggregate, and other additives. If the quality of any of these materials is poor, it can lead to a weaker concrete mixture that is more prone to failure.
2. Improper mix
Mix design plays a critical role in the strength and durability of concrete. If the mix design is incorrect, the concrete may be too porous, making it more susceptible to cracking and failure.
3. Poor construction management
Concrete structures can also fail due to poor construction practices, such as incorrect curing procedures, inadequate reinforcement, or improper placement of concrete.
4. Environmental Factors
Exposure to extreme temperatures, moisture, chemicals, live loads and other environmental factors can cause concrete to deteriorate over time, leading to cracks, spalling and other forms of failure.
5. Overloading
Concrete structures that are subjected to excessive loads can experience cracking and failure if they are not designed or built to handle them.
6. Corrosion of reinforcement
Reinforcing steel is an essential component of concrete structures, but it can corrode over time if it is not protected adequately. Corrosion can weaken the steel, leading to cracking and failure of the concrete structure
crACK REPAIRS
Polyurethane vs Epoxy
Epoxy and polyurethane injections offer great advantages for fixing concrete cracks. Epoxy is strong and bonds well, providing a durable connection that supports structural strength. On the other hand, polyurethane expands when injected, sealing even tiny cracks in concrete with resin, making it especially effective for repairing leaky cracks
Carbon fiber technology
A1’s carbon fiber repairs are a very effective solution for repairing bowed walls as well as effectively addressing cracks and leaks in foundation walls while providing essential structural reinforcement.
This solution offers a durable and reliable method for securing your foundation, harnessing the exceptional strength of carbon fiber to mitigate any potential future movement.
Carbon fiber is lightweight and boasts remarkable tensile strength, being ten times stronger than steelThe best way to fix a bowed foundation wall really depends on the severity of the problem. If the bowing is severe, other means of repair such as steel reinforcement, stitching, or rebuilding the wall may be necessary.
In most cases, carbon fiber strapping is an effective solution.
