TYPAR® Flashing AT is a flashing membrane specifically engineered for a broad range of temperature applications. When used properly, along with the TYPAR® Weather Protection System, Flashing AT will provide a barrier of protection against moisture penetration at the window, doors and thru-wall entry points. Additionally, Flashing AT will assist in preventing water from penetrating the building envelope, which can lead to damaging mold and mildew growth. The aggressive synthetic block co-polymer adhesive provides maximum adhesion on OSB, plywood, aluminum, vinyl, and weather resistive barriers - even in extreme temperature conditions.