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 ...

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 ...