Fiberglass and FRP (Fiber Reinforced Plastic) are often used interchangeably, but are they truly synonymous? In essence, fiberglass refers to a material composed of very fine glass fibers, commonly woven into a fabric. This material is renowned for its strength, durability, and versatility. FRP, on the other hand, is a composite material made of a polymer matrix reinforced with fibers, with fiberglass being one of the most common choices for reinforcement.