About this service
Flat roofing covers a range of systems used on low-pitch or flat surfaces. GRP fibreglass (also called FRP) is a seamless, liquid-applied resin reinforced with glass mat that forms a continuous, joint-free surface. Torch-on felt is built up in layers of bituminous felt torched together for a tough, proven finish. EPDM rubber is a single-ply synthetic rubber membrane with excellent weathering and flexibility.
Each system suits different situations. GRP is popular for domestic extensions and garages where a seamless, attractive finish is wanted. Torch-on felt is a robust, cost-effective choice for larger or commercial flat roofs. EPDM offers long life and flexibility. We assess the roof, its use and access before recommending the right system.
Our process
We start with a professional inspection of your roof — using drone imagery where access is difficult — to identify the cause of the problem rather than just the symptom.
You receive a clear written quotation setting out the recommended works, materials and price, with no obligation.
Our experienced roofing team carries out the work using quality materials, keeping the site clean and organised throughout.
We complete a final inspection, remove waste responsibly and confirm any applicable workmanship guarantee.
Frequently asked questions
Which flat roof system is best?
It depends on the roof. GRP fibreglass gives a seamless finish popular on domestic extensions; torch-on felt is robust and cost-effective for larger areas; EPDM rubber offers long life and flexibility. We recommend the right system after inspecting the roof.
How long does a fibreglass (GRP) flat roof last?
A properly installed GRP fibreglass flat roof is a long-life system, typically expected to perform for 25 years or more with reasonable care. Read our article on how long a fibreglass roof lasts for more detail.
Can you repair my existing flat roof?
Yes, where the deck is sound. We repair splits, blisters, failed seams and leaks in felt, GRP and EPDM roofs. If the deck or covering has failed broadly, we will recommend a replacement and quote for it.
Do you improve the falls on a flat roof?
Yes. Standing water is a common cause of flat roof failure, so we address the falls and drainage as part of any replacement to ensure water moves off the roof correctly.
Can a flat roof be repaired during winter?
Yes, in many cases. We repair splits, failed seams and active leaks in flat roofs year-round, and can apply temporary weatherproofing where conditions prevent a permanent repair on the day. Some full replacements are better scheduled in better weather, but a leaking flat roof should not be left until spring — we will advise on the right approach after inspection.
Why is my flat roof leaking during winter?
Winter flat roof leaks are commonly caused by standing water that freezes and thaws, visible surface deterioration, failed joints, edge detailing that has lifted, and storm damage. Existing felt, GRP and EPDM roofs each fail in different ways. An inspection determines whether a repair, maintenance or replacement is the right answer.