How To Injection Concrete Wall Cracks With Polyurethane

Concrete crack injection with polyurethane foam is the best way to stop a foundation wall crack leak.

How to injection concrete wall cracks with polyurethane. 2 larger cracks require more epoxy injection pressure. 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. 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. 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. Polyurethane is a fluid resin which is injected into concrete cracks rock fissures expansion joints and other voids in solid underground structures. The attributes of polyurethane pu resin. Epoxy or flexible polyurethane injection.

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. This is because the liquid urethane fills the entire foundation 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. Once inside the crack it begins to foam and expand.

Foundation wall or slab crack repair using polyurethane foam injection. Within minutes the polyurethane undergoes a chemical transformation from a liquid to a solid. 4 remove the top seal using a chisel or scraper. The expanding foam completely fills it and prevents future water leaks.