While wind and ultraviolet radiation are important weather-related concerns, weather protection in the context of exterior wall assemblies generally refers to protection against water, such as bulk water penetration from wind-driven rain. A drainage plane helps provide that protection.

Commercial steel stud wall construction must shed water effectively to the exterior to meet the requirements of the IBC. In the THERMAX™ Wall System, the exterior sheathing and flashing work together to create an effective drainage plane – in a flash.

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