4" X 12' roll of woven fiberglass cloth for reinforcing the backside repair of cracks or tears of composite plastics such as SMC, FRP (traditional fiberglass) and carbon fiber. Also used to create pyramid patches for cosmetic repair to help eliminate swelling commonly seen with composites.
Adds strength to repairs
Easier to use than fiberglass matte
Perfect for pyramid patches
Helps eliminate haloing and swelling