Urethane Injection Crack Repair
Because of their superior strength, and faster construction times, poured concrete foundations have been the choice of builders over hollow block walls throughout the greater St. Louis, MO Region for decades now. However, there is an unwritten guarantee that comes with any poured foundation wall…its guaranteed to crack.
Cracking is a common issue that occurs with poured foundations due to the release of water during the curing process (known as shrinkage) or because of settlement. Cracks are commonly found near breaks in walls such as at the corners of windows and beam pockets, or in the middle of long walls. These cracks will usually leak and surface repairs with rigid products such as hydraulic cement or epoxy will often fail within a couple of years. To properly repair a leaking foundation crack, it must be filled throughout the full depth of the wall with polyurethane foam. Urethane foam will remain flexible for a number of years and will allow for slight thermal movement in the wall.
Urethane injection is not a structural repair, it is simply an economical, in many cases temporary, water stop solution and most legitimate warranties are limited in their coverage.
Foundation cracks should be inspected by a professional to determine the cause of the crack and the proper repair method.