GRP stands for ‘Glass Reinforced Plastic’, a material made from Polyester Resin reinforced by a Chopped Strand Mat to create a durable, lightweight membrane. It’s often used as a liquid waterproofing system for roofing and is known for being durable and easy to install.
What is GRP? GRP, or Glass Reinforced Plastic was Invented by Russel Games in 1938. In the beginning, it was used on boats and water containers but since those days it has been developed further and become one of the most widely used materials in the construction industry. Today’s GRP is far superior to decades earlier and is a durable, lightweight, flexible, and fully material capable of being moulded to any shape.
Benefits of GRP Roofing Systems
Safe, flame-free installation
Creates an attractive, seamless finish
Remains watertight and low maintenance for many years
Quick and easy to apply
Moulds to any shape
The catalyst colour change system clearly indicates when the catalyst has been added to the base resin
Is GRP roofing better than felt? GRP is stronger than felt and will last 3 times longer. It has the same water resistance as felt but you don’t need to worry about heat or flames during installation the way you do with felt. Installation is quick and easy and GRP roofing systems meet building regulations. All in all, glass-reinforced plastic is a superior choice to felt.