LeakBarrier EasyLay UDL 50 is a next-generation, premium, synthetic membrane that delivers best long-term weather barrier performance. Based on a revolutionary multi-laminate configuration that consists of a non-woven fabric, UV stabilized polyolefinic coating and a woven poly scrim, EasyLay UDL 50 is manufactured using polymers with inherently exceptional thermal characteristics. The bottom side is treated with a rubberized polymeric coating to reduce slippage between the Sheet and the underlying substrate.