Architectural Precast Concrete
and Steel Stud Building Panels

The H2Out System Identifies Building Panel Joint Leaks for Speedy Repair

H2Out is the only secondary drainage, street-level, sealant joint rainscreen and leak detection system. If your sealant joints ever fail, leaks exit to the outside of the building & can be located within 20 feet of the failure.

All SlenderWall joints may use a single layer or double layer of sealant applied from the exterior. A secondary water drainage system exclusive to SlenderWall is H2Out can be utilized when desired. Dow Corning and other major manufacturers have warrantied the use of their sealants in H2Out applications. (approval letters available)

Benefit: early detection and drainage to exterior if sealant joints ever leak




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