DIY Boat Repair: Great for affordable repairs, offering uniform strength and stiffness. Compatible with polyester, vinyl ester, and epoxy resins. Superior Strength & Stiffness: No-crimp construction reduces resin bleed-through for outstanding stiffness and strength. Perfect for DIY boat repairs and professional applications. Resin Usage: For every yard of 50" 1708 Biaxial Fiberglass, you will need about a half gallon of resin. Multiple Applications: Ideal for marine, aerospace, FRP parts, auto body, on wood, fiberglass, or metal!! Grade A-True Composites: Trusted by professionals, this premium product is designed for use in the marine industry. What is 1708 Fiberglass? “1708” indicates the weight of each layer. For example, the +/- 45 biaxial weave cloth is 17 oz. per square yard, & the mat backing is 8 oz. per square yard, so the total weight is 25 oz. per square yard. Flat non-crimped fiber sheet yield reduced print-thru & higher stiffness than woven fabric. Ideal for repairs, tabbing, & reinforcing. Fiberglass Biaxial fabric is a #1708 E-glass Biaxial (+/-45 degree) Cloth with 3/4 oz mat backing held together by light stitching.