Feature●General Purpose Fiberglass: The 4 oz fiberglass cloth is popular for a wide range of lightweight applications like laminating, reinforcing, sheathing and waterproofing. It is a flexible fabric and it wets out transparently.●This fiberglass cloth roll provides a uniform strength horizontally and vertically.●Generally called a sailboat cloth, it is a smooth, lightweight cloth, and is often used on surfboards, sailboats, cedar strip canoes, or other applications including pool, automotive or marine repairs.●Use with epoxy, polyester, and vinyl ester resin.Description Among reinforcements, Fiberglass Fabrics are the most commonly used reinforcement in the Boat Building industry. They are the least expensive among reinforcements and offer ease in handling.