DuPont™ AırGuard® Sd5Home / Products / DuPont™ AırGuard® Sd5DuPont™ AırGuard® Sd5A continuous layer of DuPont™ AirGuard® Sd5 reduces air penetration by providing an effective vapor control barrier that controls air movement and moisture penetration in the building’s living quarters.Application fieldsRoof RenovationUnprotected RoofGravel RoofWater Vapor Permeable RoofPitched RoofCompartment WallsPrefabricated HousesDownloads Technical Datasheet Brochure Declaration of performance