Evercoat Sea-Glass 24oz Fiberglass Woven Roving The Evercoat Sea-Glass Fiberglass Woven Roving is super-heavy, woven cloth for faster buildup and extra strength. Should be used in addition to mat and cloth to acquire the strength needed with minimal lay-up time. Use with polyester or epoxy resin in combination with glass mat where maximum strength and build-up are required. Heavy weight, high strength 24 oz. 50 x 1 yd. 1.38 sq. yds. California Residents WARNING Cancer and Reproductive Harm - P65