Fiberglass Cloth 6 Oz, Plain Weave 50" x 15 ft. / 5 yd. Long for Boat, Auto, Surfboard, Tub, Pool Repair, etc. Length: 15 Feet (5 Yards) Width: 50 Inch Weight: 6 Oz./sq. yard. (200 gsm) Fiberglass woven roving cloth is made from continuous E-Glass Roving that is loosely woven into a heavy fabric. They are suited for application in boats, pools, crafts, etc., and are compatible with polyester, epoxy, and vinyl ester resin systems. High Tensile Strength: Fiberglass cloth is one of the strongest textile fibers, having greater specific tensile strength than steel wire of the same diameter, at a lower weight. Durability: Being inert, fiberglass cloth is unaffected by sunlight, fungus, or bacteria. Dimensional Stability: Fiberglass cloth has low elongation under load, generally 3% or less. Glass fibers produce fabrics with excellent dimensional stability under various types of conditions. High Heat Resistance: Fiberglass cloth has excellent heat resistance at a relatively low cost. Fire Resistance: Fiberglass cloth is composed of inorganic materials and is non-combustible, a natural choice where flammability is of concern. Low Thermal Conductivity: The rapid heat dissipation of fiberglass cloth is particularly important in electrical insulation applications. Good Chemical Resistance: Like glass itself, fiberglass cloth is highly resistant to attack by most chemicals. Outstanding Electrical Properties: Fiberglass fabric withstands high temperatures and has low moisture regain. Along with its high dielectric strength and low dielectric constant, glass is of major importance and usefulness in electronics.