Flat Roofing in Edgware
Flat roof installation, replacement and flat roof repair in Edgware, for extensions, garages and domestic flat roofs, with clear quotes and workmanship you can rely on.
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Flat Roof Services in Edgware
Our Services
About Our Flat Roofing Services in Edgware
Flat roofs are common across Edgware, especially on rear extensions, garages, porches and dormers. The most common problems we see are ageing felt systems, poor detailing at edges, and drainage issues that lead to standing water. Our approach is to get the structure right first, then install or repair the roof using materials and methods that suit the property, so you get reliable waterproofing and fewer surprises long term.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roofing Systems We Install
Different roofs suit different buildings. We’ll recommend the right system based on roof size, access, budget and how the space is used.
EPDM Rubber Roofing
EPDM rubber roofing is a strong choice for Edgware homes because it stays flexible, resists cracking and handles temperature changes well. It’s ideal for extensions and garages where you want a low-maintenance flat roof with a long lifespan.
GRP Fibreglass Roofing
GRP fibreglass roofing creates a seamless, joint-free finish that’s fully waterproof and easy to keep clean. It’s especially suited to smaller flat roofs and areas where you want a neat, modern finish with strong long-term durability.
Torch-On Felt Roofing
Torch-on felt remains a reliable option when installed properly using modern multi-layer systems. It’s a cost-effective flat roofing solution for many domestic properties in Edgware, particularly where a straightforward replacement is needed.
Liquid Roofing Systems
Liquid roofing is useful for complex roof shapes, awkward details and refurbishment work. The coating forms a continuous waterproof layer that seals joints and problem areas effectively, making it a smart option for certain flat roof repairs and overlays.
Why Homeowners in Edgware Choose Us?
Most people call a roofer after a leak has already started. What they want is simple, someone who turns up, explains what’s wrong without the drama, and fixes it properly. We work cleanly, keep you updated, and focus on long-term results, not quick patches that fail again.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Trusted Roofing Services Across the
South East
Known for reliable workmanship, honest advice and tidy, respectful service from start to finish.
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 tell you what’s causing the issue, and what the sensible fix is.

You get a clear written quote and an agreed schedule, no vague pricing or surprise add-ons.
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We complete the work carefully, then check edges, joints and drainage points to make sure the roof is watertight before we leave.
Frequently Asked Questions
It depends on the system and how well it’s installed. EPDM and GRP commonly last 20 years or more, and modern torch-on felt systems often last 10 to 15 years when fitted correctly.
Often yes. If the leak is localised and the structure is sound, a proper repair can solve it. If the covering is failing across multiple areas, replacement is usually the better long-term option.
Typical causes include standing water, blocked outlets, cracked or split membranes, lifting edges, and poor detailing around trims, rooflights or wall junctions.
EPDM generally lasts longer and needs less maintenance. Felt can still be a solid option when installed properly and may suit some budgets better. The best choice depends on the roof and the property.
Yes. If water is coming in, we can prioritise emergency repairs to stop the leak and prevent further internal damage.
Yes. During replacement we can upgrade insulation to improve heat retention and reduce condensation, which is especially useful on extensions and converted spaces.

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