vapor retarders allow for some level of vapor permeability, whereas plastic vapor barriers are designed to be impermeable. Retarders are often preferred in climates where completely blocking vapor ...

While both limit the movement of water vapor, vapor retarders allow for some level of vapor permeability, whereas plastic vapor barriers are designed to be impermeable. Retarders are often ...

using a vapor retarder below the attic insulation, and providing for adequate attic ventilation are additional precautions. Attic ventilation is an important consideration. With adequate ventilation, ...

Certified as a Class 1 vapor retarder, the Pro Crawl Barrier ensures high performance at an affordable price, making it a trusted option for both first-time installations and upgrades. Certified Class ...

Certified as a Class 1 vapor retarder, the Pro Crawl Barrier ensures high performance at an affordable price, making it a trusted option for both first-time installations and upgrades. Certified ...