Crack Injection Sealing & Concrete Wall Crack Repair

Cracks in poured concrete occur as buildings age and settle. Once the foundation cracks, waterproofing is compromised and may cause significant seepage issues. Typically wall cracks form near windows, foundation stepdowns (where the wall is weaker) or in corners, although cracks can occur anywhere. Not all foundation cracks leak, but once a foundation is cracked, it is likely that it will leak at some point in the future.

Injection sealing of the crack will address the problem and can be done from the inside with minimal disruption. Our approach involves drilling a series of holes every 6 -8" intervals along the run of the crack. Each access hole is 3/8" in diameter, set perpendicular to the run of the crack and angled at 45 degrees so that the drilled hole crosses the crack at the approximate centre of the wall being treated thus ensuring the most effective distribution of sealant.

Injection ports are placed in each hole and a polyurethane resin with an expansion and drying activator is then injected at up to 6,800 PSI in the crack cavity. Once excess resin begins to emerge from the visible crack face the crack cavity has been completely filled. The resin will then set and expand to 3 times its fluid volume ensuring the crack is sealed and water tight.