GREENSCAPES® GS-110 (Root Barrier, Vapor Barrier, & Protection Course): A single ply polyethylene sheet used as a root barrier with an extensive GREENSCAPES® Assembly, GS-110 can also be used in deeper assemblies where no woody species are to be planted. GS-110 is manufactured with polyethylene resins that provide high tensile strength, high puncture resistance, low moisture vapor permeability, and excellent resistance to root penetration and decay.