Brownfields

Geo-Seal® EV40s is a significant improvement over existing single sheet membranes. Geo-Seal® EV40s consists of an EVOH membrane combined with a robust geotextile layer to provide a single sheet vapor intrusion barrier that is chemically resistant and easy to install while also providing improved protection during the installation process.

Geo-Seal® EV40s is ideal for lower risk sites where site concentrations are at or below state-specific screening levels or large, wide-open, flat sites where speedy installation times are required. It’s also a perfect complement to projects that seek to implement active sub-slab ventilation systems. Pairing Geo-Seal® EV40s with an active ventilation system increases the efficiency of the system while also providing a layer of redundancy should the mechanical components of the active system not operate according to plan or temporarily cease operation.

Geo-Seal® EV40s meets most state and federal minimum thickness requirements of 30 mil for passive vapor mitigation barriers and meets Class A vapor barrier standards. Geo-Seal® EV40s utilizes Geo-Seal® CORE spray membrane to seal seams, detail penetrations, and terminate the membrane to concrete surfaces. Geo-Seal® CORE seaming outperforms simple tape sealing methods and allows for barrier smoke testing to ensure a vapor-tight seal.