Dynatron Fiberglass Mat helps repair defects such as holes, cracks and tears in fiberglass, metal, wood, aluminum and masonry. This fiberglass mat will not rust or rot. Use with Bondo Fiberglass Repair Resin for hundreds of repairs to tubs, showers, cars, boats, trucks, RVs and more.Strong, Reinforced Repairs When properly used with fiberglass resin, Dynatron 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. Fiberglass mat is often used with fiberglass cloth and fiberglass resin for repairs. 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 Mat Fiberglass mat consists of short strands of fiberglass bonded together with a resin. While not as strong as fiberglass cloth, fiberglass mat can be used to build thickness between layers of fiberglass cloth. Fiberglass mat offers numerous other benefits, including a resistance to expansion or contraction as temperatures change. Fiberglass mat will not absorb moisture and is non flammable. Our fiberglass mat is also resistant to most chemicals. Repairs Customized to Your Needs Our fiberglass mat is highly pliable, enabling it to conform to curved surfaces on automobiles. The flexible nature of the mat allows for customized automotive bodywork repairs on fenders, doors, hoods and other sections of the car body.