Fibreglass Roofing Kits (GRP Roofing Kits)

A GRP roofing kit is a complete fibreglass flat roof kit containing the main materials needed to install a seamless GRP roof system, typically including resin, fibreglass reinforcement and topcoat, with kit options by roof size and specification.

Choose 300g for lighter-duty small roofs, 450g for standard domestic flat roofs, 600g for heavier-duty roofs and fire-rated GRP kits where the project requires upgraded fire performance.

The number refers to the reinforcement weight used in the fibreglass laminate. 300g is lighter duty, 450g is the standard domestic choice and 600g is heavier duty for stronger roof build-ups.

A correctly installed GRP flat roof can last for many years when fitted over a suitable deck and maintained properly. The final lifespan depends on installation quality, roof use, detailing and exposure.

Many GRP roofing kits are suitable for competent DIY users on smaller flat roofs, provided the deck is suitable and the installation instructions are followed carefully. Trade installers may be better for larger or more complex projects.

GRP roofing kits normally include the main resin, reinforcement and topcoat required for the roof area. Always check the individual kit contents and add trims, tools or extras where needed for your specific roof.