Underseal Blindside Waterproofing Membrane

Quick Overview

Basic Uses:
• Underseal Blindside* Membrane 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. In addition to protecting indoor air quality, Underslab Membrane also is barrier to termites, pesticides, methane gas and radon gas.


Description:
• Blindside Membrane is a strong sheet membrane with a 4 mil thick high density polyethylene backing laminated to a 56 mil thick layer of proprietary waterproofing compound integrated with a 23 mil thick nonwoven geotextile fabric. 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.