STAR NEW mat is a versatile repair material for use on automobiles, boats, tubs, showers, sinks, pools, hot tubs and moreIt works on a variety of surfaces, including metal, fiberglass, and wood. Mat ca be cut with scissors for uniform repairs. Fiberglass mat provides structural reinforcement for stronger repairs and can be used with Polyester resin or epoxy resin. The product repairs holes, cracks and gaps. When used with polyester resin, repairs are 100% waterproof, making the products ideal for tub, shower, sink, pool, hot tub, boat repair and more. It is easy to work. This product can also be used on additional surfaces such as wood, concrete and metal to provide extremely strong, durable and waterproof repairs. Reinforced Repair Areas When properly used with resin, Fiberglass mat reinforces repair areas and allows for repainting so that the repair looks like the original surface once the job is complete. Fiberglass mat is easy to cut to size and shape for customized repairs on automobiles. To complete the repair, you'll add layers of fiberglass cloth along with fiberglass resin to fill the hole. Once the patched area has cured, it can be sanded smoothly so that it is level with the surrounding surface. A fiberglass repair completed with resin and mat is fully compatible with being painted. Benefits of Fiberglass Cloth Fiberglass mat is a non woven fabric that helps reinforce repairs with its high strength to weight ratio. Use this fiberglass mat where resin alone would not provide sufficient strength. Fiberglass cloth offers numerous benefits, including a resistance to expansion or contraction as temperatures change. Fiberglass mat will not absorb moisture and is non-flammable. The fiberglass is also resistant to most chemicals