When water finds its way into concrete surfaces, it can rust the reinforcing rebar in the concrete. As the rebar continues to rust, it expands, causing the concrete to ‘spall’. A spall is where layers of concrete have broken free of the remaining (sound) concrete.

These spalls can lead to structural problems and water entry points, as well as create safety issues for pedestrians and traffic that use the concrete surface, or find themselves below these surfaces.

Building movement can lead to structural cracks in concrete surfaces. Structural cracks not only allow water to penetrate a building, which can lead to spalling, but they can also lead to further structural damage and jeopardize the integrity of the building.

Urban Waterproofing employs a variety of techniques to solve these problems, both before they happen and during a remedial repair. Some of these solutions include chemical grout injection, epoxy injection, spall removal and repair, sealant replacement, and elastomeric wall coating systems.

Proactive waterproofing can prevent, and remedial waterproofing can correct these conditions, prolonging the life of the structure, and making it safe once again.

Urban Waterproofing works closely with architects and engineers, developing waterproofing strategies designed to extend the life of the building envelope.