Flat Roofing Reading
Need flat roof repair, replacement, or a new installation in Reading? We work across RG1 to RG30, covering garages, extensions, dormers and commercial buildings, with clear advice and workmanship that holds up.
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Flat Roof Repair and Installation in Reading
Our Services
Flat Roofing That Suits Reading Homes and Businesses
Reading has a mix of older housing, modern extensions, and commercial buildings, and flat roofs on each behave differently. We take a practical approach, inspect the structure, address drainage, and recommend the right system for the building, not just the quickest option.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roofing Systems We Install
Every system has its place. We will talk you through what suits your roof best based on access, roof size, budget, and how long you want the solution to last.
EPDM Rubber Roofing
EPDM is a durable rubber membrane that handles movement and temperature changes well. It is a solid choice for many flat roofs in Reading because it is flexible, weather-resistant, and suited to both residential and commercial roofs.
GRP Fibreglass Roofing
GRP provides a seamless, hard-wearing finish that works well on smaller flat roofs like garages and dormers. Preparation is everything with GRP, so we focus on clean detailing and proper curing to avoid future cracking or weak spots.
Torch-On Felt Roofing
Modern torch-on felt remains a reliable option when installed in the correct layers with strong edge details. It is a cost-effective system that can perform well for years when the falls and trims are done properly.
Liquid Roofing Systems
Liquid-applied roofing is useful for awkward roof shapes, heavy detailing, or areas where sheet systems are difficult. Once cured, it forms a continuous waterproof layer, ideal for refurbishment work and complex roofs.
Why Flat Roofs Fail, and How We Prevent It
Most flat roof failures come down to poor drainage, rushed detailing around edges and rooflights, or repairs that do not address the underlying issue. We focus on correct falls, sound joins, and proper finishing so the roof stays watertight, even in heavy Reading rain.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Trusted Roofing Services Across the
South East
Straight answers, tidy work, and flat roofs that actually last
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 start with a proper roof inspection and clear advice on the best next step.

You get a clear quote and a sensible schedule, with no vague pricing or guesswork.
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We complete the work carefully, check weak points before we leave, and keep the site clean.
Frequently Asked Questions
It depends on the system and how well it was installed. Many flat roofs last 20 to 40 years, and regular inspections plus quick repairs can extend the lifespan.
Pooling usually means the falls are wrong, outlets are blocked, or the structure has dipped over time. It should be inspected because standing water speeds up wear and increases leak risk.
Often yes, if the roof is otherwise in good condition and the leak source is clear. If the membrane is failing across large areas, replacement may be more cost-effective.
EPDM is flexible and handles movement well, while felt can be a strong, cost-effective option when installed correctly in layers. The “best” option depends on the roof and budget.
A good rule is at least once every couple of years, and after major storms. This helps catch small issues early, especially around outlets and edges.
Yes. We cover Reading and surrounding areas within RG1 to RG30, including nearby villages and suburbs.

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