There are a lot of companies that do foundation wall cracks and repair them from the inside or outside with a patch method. If the basement is unfinished (no drywall or paneling) and the crack is exposed on the interior, companies typically recommend epoxy/urethane injection process. This is a two step process which involves sealing the crack on its inside face with an epoxy paste and injecting a urethane resin which fills the entire crack to the outside soil.

If the crack is obstructed by paneling or drywall, then companies address the problem from the exterior utilizing wall-clay process or using the epoxy/urethane injection process. This involves coring a small hole in the earth at the crack location and filling the hole with a granular clay to form an impermeable water barrier or injecting the urethane and using the epoxy paste. Both foundation crack repair processes are minimally invasive and minimally effective. Most foundation wall cracks do not pose any structural concerns, but solving them correctly the first time will prevent any future needs or worries about the cracks. Certain crack pattern formations and those wider than 1/8”, however, can be a sign of a structural problem that should be further evaluated by companies who offer foundation crack repair and structural repairs.