What is a Glass Reinforced Polymer (GRP) typically used for?

• A. Composite material made from strands of glass and a resin, used for boat hulls and other items.
• B. Metal alloy with a glass coating.
• C. Ceramic material used for heat shields.
• D. Natural fiber reinforced with polymer.

Answer: (A)

Glass Reinforced Polymer is a composite where glass fibres are embedded in a polymer resin. The glass provides high strength and stiffness, while the resin binds the fibres, transfers loads, and protects them from moisture. This combination makes the material strong yet lightweight and resistant to corrosion, which is why it’s commonly used for boat hulls and similar products where you want durability without extra weight. It isn’t a metal with a glass coating, nor a ceramic material, nor a natural fibre reinforced with polymer, because GRP specifically uses glass fibres in a polymer matrix rather than metal, ceramic, or natural fibres.