73 mil x 48" x 50' Underseal® Blindside™ Membrane

About this product

Underseal® Blindside™ Membrane is a pre-concrete pour, strong sheet membrane waterproofing with a thick, cross-laminated, high-density polyethylene (HDPE) backing, laminated to a thick layer of proprietary waterproofing adhesive compound integrated into a nonwoven geotextile fabric. It is used as a waterproofing membrane where vertical, positive-side waterproofing is required, but access to the positive side is impossible due to the soil retention system. Once the concrete is poured against the Blindside™ membrane, the concrete cures and a mechanical bond forms to secure the concrete to the membrane. Also, subsequent to concrete placement, cold flow of the waterproofing compound will take place and an adhesive bond will be added to the mechanical bond given by the fibers. With both a mechanical and adhesive bond, the concrete will be tightly sealed and bonded to the membrane, creating superior protection against moisture intrusion. Underseal® Blindside™ can also be used in certain horizontal applications. Features: Blindside Membrane provides a permanent seal between the membrane and the poured concrete wall to eliminate moisture migration into the structure. Superior puncture resistance of greater than 217 Lbs. which provides strong resistance to concrete construction abuse Flexible material that adapts to jobsite irregularities Rainfall, freeze/thaw and wet/dry cycling do not affect the installed system Fully adhering watertight laps for ease of installation