Shop our range at Selhurst Timber of GRP roofing systems designed to provide durable and waterproof solutions for flat roofing projects. GRP systems, often referred to as fibreglass roofing systems, are widely used by builders and roofing contractors to create strong, seamless and weather resistant flat roofs. Suitable for extensions, garages and other flat roof structures, GRP roofing systems offer long lasting performance and excellent resistance to water penetration. Also are you in need for help with finding the correct amount? Please use our material calculators to help.