Case Study
Below Grade Waterproofing Experts
Water Intrusion and Concrete Corrosion in Underground Parking Structure Structural Rehabilitation Repair Technology
www.FoundationTechnology.com
Water from irrigation and storm run-off was causing the rebar & CMU block to corrode and degrade.
Metal corrosion was evident on the surface and in the structural rebar, within the walls.
Water was penetrating the main electrical panel, causing sporadic electrical failures & potential fire hazards.
A Property Management company contacted Foundation Repair Technology to provide a solution for water intrusion into the underground parking structure on one of their condo projects. The water from irrigation and storm run-off was causing severe corrosion problems with the structural rebar within the perimeter walls, and leaking into the main electrical panel. Topical waterproofing solutions, and excavation of the exterior walls to apply a petroleum based mastic, failed almost immediately after those repairs were completed. Foundation Tech suggested injecting hydro-insensitive polyurethane foam through the walls, to provide a positive waterproofing solution that would not only stop the water, but also protect the concrete and CMU block structural components of the building. HMI 401G Hydrophobic foam was selected due to its excellent expansion in wet locations. Approximately 6,000 lbs. of foam were injected through the CMU block walls, in a 3 ft. pattern along the areas prone to water intrusion. The foam travels along the wet wall and expands to create a positive watertight seal against the corrosive effects of moisture entering through the concrete and CMU block, and stops all water from leaking into the underground parking structure. The job was completed in six days, with zero disruption to the tenants of the condo project. A water intrusion test was performed after the completion to ensure all “leaking” areas were completely sealed. Call for an inspection and detailed proposal for your waterproofing projects:
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CSLB 991221 Foundation Tech, Inc. d.b.a. Foundation Technology 25217 Anza Drive, Santa Clarita, CA 91355