Flat Roofing South Wales installs and repairs GRP fibreglass roofing systems for homes and businesses throughout South Wales.
GRP creates a tough, seamless waterproof surface and is particularly popular for extensions, garages and other flat roof applications where homeowners want a clean modern finish.
GRP stands for Glass Reinforced Plastic, although it is commonly known simply as fibreglass roofing. The roofing system is formed directly over a prepared roof deck, creating a solid waterproof covering across the roof with fewer joints where water could potentially enter.
We provide complete installations, replacement roofs and repairs to existing fibreglass roofing.




GRP is suitable for many flat roofing applications, including:
GRP provides a hard-wearing finish capable of coping with the changing weather conditions experienced throughout South Wales.
It produces a neat appearance and can be formed around roof details, edges and upstands. Unlike flexible membrane systems, the finished fibreglass surface becomes rigid once cured.
Existing fibreglass roofs can sometimes develop problems through poor installation, movement, impact damage or deterioration around joints and edges.
We can investigate cracks, leaks and damaged areas and determine whether a local repair is practical.
Where an existing roof has deteriorated beyond economical repair, we can provide a complete replacement.
The underlying roof deck is particularly important with GRP roofing, so the substrate must be correctly prepared before the new system is installed.
Considering a GRP fibreglass roof in South Wales? Speak to Flat Roofing South Wales about your property and arrange a free quotation.
Get a Free QuoteAt Flat Roofing South Wales, we provide professional flat roofing installation, replacement and repair services throughout South Wales, helping homeowners, landlords and businesses maintain watertight and dependable roofs.
Free, no-obligation quotes and fully insured workmanship on every job -- from a single garage roof repair to a complete flat roof replacement.
📞 Call 07868 857692From Indian sandstone-style attention to detail on every job, to garage roofs, extensions, and emergencies, Flat Roofing South Wales can transform and protect your outside space.
Call 07868 857692 Today →A well-installed GRP roof can last 20-30 years or more, thanks to its tough, seamless, rigid surface.
GRP is generally hard-wearing, though suitability for foot traffic depends on the specific installation -- we can advise based on your roof.
Cracking is often linked to movement in the roof deck, impact damage, or the substrate not being properly prepared before installation.
Yes, GRP's seamless, weather-resistant surface makes it a popular choice for coastal properties across South Wales.
Tell us about the job and we'll get back to you — usually the same day.
Prefer to talk? Call 07868 857692.