GRP is basically a glass-reinforced panel that is also called fiberglass or composite panel. It is a sheet that is made of glass fibers combined with different polymers. People also refer to it as "glass-fiber," so don't be confused when that word is thrown around. This is a common material used for construction or building purposes that has many applications outside as well as inside. You can use GRP roofing, flooring, wall cladding and so much more! __