How To Injection Concrete Wall Cracks With Polyurethane

Foundation wall or slab crack repair using polyurethane foam injection.

How to injection concrete wall cracks with polyurethane.

To repair a crack embedded in the walls or foundations of your home two products are very commonly used. The attributes of polyurethane pu resin. From reviewing the typical applications above it is clear that polyurethane injection is an extremely versatile waterproofing method that can be used to deal with any basement leak in a poured concrete structure under all conditions. Concrete crack injection with polyurethane foam is the best way to stop a foundation wall crack leak.

Within minutes the polyurethane undergoes a chemical transformation from a liquid to a solid. 4 remove the top seal using a chisel or scraper. Polyurethane crack injection kits are recommended for non structural leaking cracks resulting from concrete shrinkage or minor settlement while epoxy injection kits are designed to treat more severe cracks that compromise the structural integrity of the wall. When used in concrete crack injection applications the polyurethane is injected into a crack.

The expanding foam completely fills it and prevents future water leaks. Once inside the crack it begins to foam and expand. 1 start with a low pressure injection setting and increase the pressure as needed. 3 when filling wide cracks wait some time not a lot ensuring that the epoxy is filling the concrete crack.

Polyurethane injection involves injecting leaking basement cracks with a foam rubber seal this type of repair to leaking basements is most appropriate on solid cast in cast in place concrete walls or slabs such as underground parking garages or cold cellars and ceilings. 2 larger cracks require more epoxy injection pressure. This article explains how to use injected polyurethane foam to repair a concrete basement or crawl area wall or slab crack in order to stop basement or crawl space water entry or air leakage. Flexible polyurethane and epoxy during a repair the technician either carries out their work with a flexible polyurethane injection or an epoxy injection into the crack to seal and waterproof the foundation.