For Ascot property owners who want the ultimate flat roof solution, GRP fibreglass delivers unmatched strength, longevity, and a beautiful finish. Apex UK Roofing installs GRP flat roofing systems across Berkshire, creating a single monolithic waterproof shell with no joints, seams, or weak points.
GRP (Glass Reinforced Polyester) fibreglass flat roofing is a hand-laminated system that creates a completely seamless, rigid waterproof shell over your flat roof deck. The process involves laying chopped strand glass fibre mat onto a prepared OSB or plywood deck, saturating it with catalysed polyester resin, and rolling out air bubbles to create a dense, void-free laminate. This cures to form a single monolithic membrane with no joints, seams, or potential failure points. The finished surface is then topped with a UV-resistant topcoat in a choice of colours, typically grey, to provide solar protection and an attractive finish.
GRP roofing is exceptionally strong (stronger than steel by weight), completely waterproof, and resistant to foot traffic, impact, UV degradation, and chemical exposure. It does not rot, rust, or delaminate, and requires no maintenance beyond occasional cleaning. Our team serving Ascot and Berkshire is factory-trained in GRP application techniques, ensuring consistent quality and full manufacturer guarantee eligibility. For properties in Ascot, where an affluent village in east Berkshire renowned for its racecourse and many high-value detached properties with complex roof lines, GRP is an excellent choice for extensions, garages, dormers, bay tops, balconies, and any flat or low-pitch roof area.
We survey your Ascot flat roof, assess the deck structure, and specify the correct GRP system including board type, resin system, trim profiles, and topcoat colour.
We install new 18mm OSB3 or plywood decking on properly spaced joists, ensuring correct falls for drainage. All joints are sealed and the deck is sanded for optimal resin adhesion.
Our trained laminators apply the GRP system by hand, laying glass fibre mat, saturating with catalysed resin, and rolling out to create a dense, void-free laminate with properly formed edges and upstands.
Once cured, we apply a UV-resistant topcoat in your chosen colour, fit GRP trims and edge details, and conduct a thorough inspection. The system is registered for the manufacturer guarantee.
GRP fibreglass roofs are designed to last the lifetime of the building, with manufacturer guarantees of 25 years or more.
The laminated system creates a single waterproof shell with no joints, seams, or potential leak points anywhere on the roof.
GRP is strong enough to walk on, making it ideal for balconies, roof terraces, and areas that need regular access for maintenance.
Our laminators are factory-trained and accredited, ensuring every installation meets the manufacturer standards required for full guarantee cover.
A correctly installed GRP fibreglass flat roof is designed to last the lifetime of the building, typically 30 to 50 years or more. The material does not degrade, rot, or become brittle over time. We offer manufacturer-backed guarantees of 25 years, but in practice these roofs far outlast their guarantee period. GRP has been used in boat building and industrial applications since the 1950s, providing decades of real-world proof of its exceptional durability.
Both are excellent modern flat roofing systems, but they suit different situations. GRP creates a rigid, seamless shell that is walkable and can be finished in colours, making it ideal for balconies, high-traffic areas, and visible roof sections. EPDM is more flexible and forgiving on irregular substrates, and is typically more cost-effective on larger areas. For extensions and garages in Ascot, GRP is often the premium choice, while EPDM excels on larger commercial or industrial flat roofs. We can advise on the best option for your specific project.
GRP fibreglass flat roofing in Ascot typically costs between 80 and 120 pounds per square metre fully installed, including decking, laminate, and topcoat. A typical garage roof of around 15 square metres costs between 2,000 and 3,500 pounds, while a larger extension roof might cost 4,000 to 8,000 pounds depending on complexity. These prices include all materials, labour, and the manufacturer guarantee registration. We provide free quotations for all GRP projects across Berkshire.
GRP is designed for flat and low-pitch roofs, typically up to about 15 degrees. It is not suitable for steep pitched roofs, which are better served by tiles or slates. However, GRP is excellent for low-pitch situations where tiles would not be appropriate, such as shallow mono-pitch roofs, porch canopies, bay window tops, and dormer cheeks. If you are unsure whether GRP is right for your Ascot project, we will assess the roof during our free site survey and recommend the most suitable system.
