GeoBarrier Y-Series Y30BAC (30 mil) and Y40BAC (40 mil) are seven layer co-extruded geomembranes consisting of very flexible, linear low-density polyethylene (LLDPE) with an inner core of chemically resistant barrier resin, designed specifically as a barrier against radon, methane and VOCs. High strength LLDPE provides exceptional tear and impact resistance. A robust stabilization package that exceeds the industry standard; provides long-term protection from thermal oxidation and ultraviolet degradation in exposed applications. Click here for Product Data Sheet.