Cracks in poured foundation walls can be fixed by injecting with either epoxy or polyurethane.
Epoxy – This method is done by securing surface mounted ports using a fibreglass resin. The resin is then used to fully cover the crack to seal in all injected epoxy. A high powered dual cartridge caulking gun is used to inject the material, and then the ports are permanantly sealed.
Polyurethane – The process for this type of injection includes drilling holes into the crack from alternating sides every 4 to 6 inches. A liquid polyurethane is injected from the bottom up, and expands in to a hard waterproof foam after curing. This method can be used in conjunction with carbon fiber staples for further structural support.