4oz Fiberglass S Cloth - Style 6522

Style 6522 is a 4 oz/yd² (136 g/m²) plain weave woven from S-2 glass, the high-strength fiber that gives roughly 25 to 30 percent more breaking strength than E-glass at the same weight. 0.0058" (0.15 mm) thick, in 27" and 30" widths. Use it where every ounce counts: surfboard and SUP skins, kayak and canoe laminates, RC and drone parts, and light skins that still need to take a hit. It wets out clear like 4 oz E-glass. Works with epoxy, polyester or vinyl ester; pair it with epoxy to get the most out of the fiber. See how to pick a cloth weight for the full comparison.