Stego Wrap Vapor Barrier is a low permeance under-slab vapor barrier engineered to exceed ASTM E 1745 Class A Standards and provide long-term moisture vapor protection.

Along with the baseline tests for permeance, puncture resistance, and tensile strength, Stego Wrap Vapor Barrier is subjected to conditioning tests for wetting, drying, soaking, heat conditioning, low temperature conditioning, and soil organism exposure.