Firestone Geotextile Underlayment Fabric consists of non woven polypropylene stable fibers which are heat set and needle punched for superior bonding. This extremely versatile underlayment fabric has a very high tensile strength. The geofabric underlay has great physical and hydraulic properties and is used for many commercial and consumer applications. Non-Woven Geotextile Fabric Pond and Multi-Use Underlayment Information: Material: Non-Woven stable Polypropylene Fiber Filament. Features: Extreme tolerance of Hydrocarbons, Freeze-thaw cycles, mildew, and rot 8 OUNCE UNDERLAYMENT SPECIFICATIONS Properties Tensile Strength (lbs.): 205 Mullen Burst (psi): 400 Puncture Strength (lbs.): 120 Water Flow Rate (g/m/sf): 90 6 OUNCE UNDERLAYMENT SPECIFICATIONS Properties Tensile Strength (lbs.): 160 Mullen Burst (psi): 315 Puncture Strength (lbs.): 90 Water Flow Rate (g/m/sf): 110
