Flat Roofing Hertford
Flat roof repairs, replacements and new installations across Hertford and nearby areas. We work on extensions, garages, dormers and commercial roofs using EPDM, felt, GRP and liquid systems.
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Flat Roof Services in Hertford
Our Services
Local Flat Roofers in Hertford
We provide flat roofing in Hertford with a focus on doing the job properly, solid preparation, correct installation, and tidy finishing. From small flat roof repairs to full replacements, you’ll get clear communication, straightforward quotes, and work that holds up in real weather.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roofing Systems We Install
We’ll recommend the right system based on the roof size, access, and how the space is used, so you’re not paying for the wrong solution.
EPDM Rubber Roofing
EPDM is a durable rubber membrane that performs well in UK weather and stays flexible over time. A great option for many Hertford flat roofs where reliability matters.
GRP Fibreglass Roofing
GRP gives a seamless, hard-wearing finish and works especially well on garages, dormers and smaller flat roofs when detailed correctly.
Torch-On Felt Roofing
Modern torch-on felt is a dependable choice when installed in proper layers with strong edge and joint detailing, ideal for many residential roofs in Hertford.
Liquid Flat Roofing Systems
Liquid systems are useful for awkward shapes and refurbishments, creating a fully bonded waterproof surface around trims, outlets and roof penetrations.
Why Homeowners in Hertford Choose Us?
You get honest advice, clear pricing, and workmanship that’s built to last. We turn up when we say we will, keep things tidy, and finish the job properly.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Trusted Roofing Services Across the
South East
Most people want one thing, the leak sorted, and no repeat problems. That’s what our customers comment on.
Removal of Chimney stack, replacement of roof underlay, guttering and flat roof repair. - Mitchell from Alliance Roofing & Building was the only builder, of many that I had contacted, that climbed a ladder to inspect my flat-roof and to climb into my loft-space to inspect the main roof from the inside. After an extensive review of my property and discussing my options, he emailed me his quotation on the same day. Booking in dates for Alliance & Roofing to commence work was quick and effortless. They arrived on time, completed the work as planned to a professional standard. Provided Photos of work carried out at all stages. I highly recommend Alliance Roofing & Building.
New roof on my bungalow - I recently had the pleasure of working with Alliance Roofing and Building to install a new roof on my bungalow, and I couldn't be more satisfied with the results. From start to finish, the entire process was smooth and professional. Mitchell, who led the project, was exceptional. His expertise and dedication were evident from the moment he arrived. He and his team were not only highly skilled but also incredibly helpful and courteous throughout the entire job. They took the time to answer all my questions
New slate roof - Mitchell and his team installed my new roof and I'm very satisfied. The quality is superb, they were professional, punctual, and communicative. The project finished on time and the site was left spotless.
Guttering repair - Mitchell came to repair my guttering, he was on time, polite, efficient and conscientious. He kept me informed at each stage of the work that was needed.
Roof repairs - Mitchell repointed a chimney and installed a chimney cowl. He also did some cementing work to the roof. Mitchell was very polite and a conscientious worker. He kept me informed throughout the job. Mitchell was able to give me a quote and do the repair work within a few days. I wouldn’t hesitate to recommend Alliance Roofing & Building.
Replacement of flat roof - Mitchell and his team are smart, communicative, skilled, friendly, helpful, trustworthy and reliable. I would highly recommend their roofing services.
Roof tile replacement and chimney repair - Mitchell and his team are reliable, efficient and hard working. We will certainly use them again in the future. Thanks guys
Chimey Removal & Other Minor Repairs - Mitchell was the only roofer who quoted for the job that actually took the time to go up on the roof to inspect the issue, which was appreciated at the time. He fitted us in around other jobs within 2 weeks to get the work done in a timely manner. The work (which included the removal of a chimney stack to below the roof line, repointing the ridge line, and various other patch repairs) appears to have been completed to a good standard (posting days after completion). Mitchell and his team were polite, conscientious and happy to help throughout the job.
Fixed the roof, including all the felting and repaired the chimney. - Good communication throughout. Good work. Very happy with the service.
Roof repair - Great, really friendly and nice team
Tile realignment/repair and felt renewal - Mitchell and his team were excellent. Would definitely recommend Alliance. The team were on time (in fact they were able to begin the job half a day earlier than initially discussed), polite, efficient and kept us informed of progress each day. We could not have asked for a better service.
Roof verge repair. - Mitchell was polite, friendly and knowledgeable. The team were polite and efficient. The work was completed for the price quoted, which was competitive, and in the timeframe advised.
repair of box gutter behind parapet wall - Mitchell undertook a detailed diagnosis of the work required, started the job quite quickly and completed it satisfactorily.
Leak in the roof- Very polite and professional. Job was completed professionally at a very good price. Would highly recommend
New slate roof - Mitchell and his team installed my new roof and I'm very satisfied. The quality is superb, they were professional, punctual, and communicative. The project finished on time and the site was left spotless.
Roof repairs - Mitchell repointed a chimney and installed a chimney cowl. He also did some cementing work to the roof. Mitchell was very polite and a conscientious worker. He kept me informed throughout the job. Mitchell was able to give me a quote and do the repair work within a few days. I wouldn’t hesitate to recommend Alliance Roofing & Building.
Roof tile replacement and chimney repair - Mitchell and his team are reliable, efficient and hard working. We will certainly use them again in the future. Thanks guys
Chimey Removal & Other Minor Repairs - Mitchell was the only roofer who quoted for the job that actually took the time to go up on the roof to inspect the issue, which was appreciated at the time. He fitted us in around other jobs within 2 weeks to get the work done in a timely manner. The work (which included the removal of a chimney stack to below the roof line, repointing the ridge line, and various other patch repairs) appears to have been completed to a good standard (posting days after completion). Mitchell and his team were polite, conscientious and happy to help throughout the job.
Fixed the roof, including all the felting and repaired the chimney. - Good communication throughout. Good work. Very happy with the service.
Roof repair - Great, really friendly and nice team
Tile realignment/repair and felt renewal - Mitchell and his team were excellent. Would definitely recommend Alliance. The team were on time (in fact they were able to begin the job half a day earlier than initially discussed), polite, efficient and kept us informed of progress each day. We could not have asked for a better service.

We inspect the roof properly and explain what’s going wrong, with a clear recommendation, repair or replacement.

You get a straightforward written quote and a sensible timeline, so you know exactly what’s happening and when.
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We complete the work neatly, check all details like joins and outlets, then leave you with a roof you can rely on.
Frequently Asked Questions
Leaks, lifting edges, cracks, soft spots, and pooling water are common signs. We’ll inspect it and tell you honestly if a repair makes sense.
It depends on roof size and usage. EPDM is strong for many extensions, GRP suits smaller roofs, and felt is reliable when installed correctly.
Yes, if the structure and most of the covering are still sound. If the roof is failing across multiple areas, replacement is usually the better call.
Lifespan depends on the system and installation quality. With good materials and proper fitting, a flat roof can last for many years with minimal issues.
Yes. If water is coming in, we can respond quickly to stop the leak and prevent further internal damage.
Yes. We can arrange an inspection and provide a clear quote with the recommended approach and expected timeline.

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