Flat Roofing in Lightwater
Flat roof installation, replacement and repairs in Lightwater GU18, for extensions, garages and residential flat roofs, completed properly and built to last.
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Our Flat Roofing Services in Lightwater
Our Services
About Our Flat Roofing Services
Flat roofs are common in Lightwater, particularly on single-storey extensions, garages and post-war housing. The surrounding woodland means leaves, pine needles and moss are constant issues if drainage and detailing are poor. Our approach focuses on correct falls, durable materials and clean finishes, so your flat roof performs properly year after year without constant maintenance headaches.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roofing Systems We Install
We recommend flat roofing systems based on roof size, access, budget and how the space is used, not a one-size-fits-all solution.
EPDM Rubber Roofing
EPDM rubber roofing is a popular choice in Lightwater due to its flexibility, resistance to cracking and low maintenance needs. It handles temperature changes well and is ideal for garages and extensions where long lifespan matters.
GRP Fibreglass Roofing
GRP fibreglass roofing creates a seamless, rigid surface that is fully waterproof and easy to maintain. It works particularly well on smaller flat roofs and areas where a clean, modern finish is preferred.
Torch-On Felt Roofing
Modern torch-on felt systems offer a cost-effective and reliable flat roofing solution. When installed correctly, they provide strong waterproof protection and are a sensible option for many domestic flat roofs in Lightwater.
Liquid Roofing Systems
Liquid roofing systems are useful for roofs with awkward shapes, multiple penetrations or refurbishment projects. The coating forms a continuous waterproof layer that bonds to the surface and seals problem areas effectively.
Why Homeowners in Lightwater Choose Us?
Homeowners want straight answers, not sales talk. We inspect the roof properly, explain what’s wrong in plain terms, and recommend the right fix for the roof and the budget. We turn up when we say we will, keep the site tidy, and leave you with a roof you don’t have to worry about.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Trusted Roofing Services Across the
South East
Known locally for reliable work, honest advice and flat roof repairs 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 inspect the flat roof, identify weak points and explain whether a repair or replacement is the best long-term option.

You receive a clear written quote and realistic timescale, with no vague pricing or moving goalposts.
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We complete the work carefully, then check outlets, seals and edges to make sure everything is watertight before we leave.
Frequently Asked Questions
Lifespan depends on the system and installation quality. EPDM and GRP often last 20 years or more, while modern felt systems typically last 10 to 15 years when installed properly.
Often yes. If the structure is sound and the issue is localised, a proper repair can solve the problem. If leaks are widespread or the covering is failing, replacement is usually the better option.
Common causes include blocked outlets, split seams, damaged trims, standing water and ageing membranes that have lost flexibility over time.
EPDM offers a longer lifespan and lower maintenance. Felt is more budget-friendly and still reliable when installed correctly. The best option depends on roof size and usage.
Yes. If water is getting in, we can prioritise emergency repairs to prevent further internal damage.
Yes. Adding insulation during replacement can improve heat retention and reduce condensation, especially on extensions and converted spaces.

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