3M (815) 488 Bondo® Fiberglass Mat, 488, 8 sq. ft. (2.5 m), Colour: White, 3M Stock No. 7000120013

Slightly thicker than the Bondo® Fiberglass Cloth, the Bondo® Fiberglass Mat is recommended when additional strength is required on more severe repairs like larger holes and cracks. To use, cut each piece of Bondo® Fiberglass Mat to size and build layers as needed. When used with Bondo® Fiberglass Resin, repairs are 100% waterproof, making the products ideal for tub, shower, sink, pool, hot tub, boat repair and more. This product can also be used on additional surfaces such as wood, concrete and metal to provide extremely strong, durable and waterproof repairs.