Trusted Flat Roofing Specialists in Lightwater

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

We handle everything from new flat roof installations to urgent leak repairs, with clear advice and no unnecessary work.

Flat Roof Installation

We install flat roofs across Lightwater for extensions, garages, porches and outbuildings, using modern systems designed to cope with standing water, leaf debris and changing weather conditions. Every installation is finished with proper drainage, clean edges and long-term durability in mind.
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Flat Roof Replacement

If your existing flat roof is worn, sagging, blistering or repeatedly leaking, replacement is often the safest option. We remove the old covering, inspect the deck underneath and install a new flat roofing system that fixes the root cause, not just the visible damage.
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Flat Roof Repairs

Flat roof repairs in Lightwater need to be done properly, not patched and forgotten. We repair split membranes, failed joints, damaged trims and pooling issues, making sure the repair suits the roof type and prevents repeat leaks.
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Flat Roof Inspections

Not sure whether your flat roof needs a repair or full replacement? Our inspections check the membrane, outlets, edges and underlying structure, then explain clearly what condition the roof is in and what makes sense next.
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Emergency Flat Roof Repairs

Leaks on flat roofs can spread quickly, especially after heavy rain or blocked outlets. We offer emergency flat roof repairs in Lightwater to stop water ingress and protect ceilings, insulation and internal finishes.
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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.

Checkatrade Verified reviewer - Job location: SL3

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

Checkatrade Verified reviewer - Job location: SL3

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.

Checkatrade Verified reviewer - Job location: SL9

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.

Checkatrade Verified reviewer - Job location: SL4

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.

Checkatrade Verified reviewer - Job location: SL6

Replacement of flat roof - Mitchell and his team are smart, communicative, skilled, friendly, helpful, trustworthy and reliable. I would highly recommend their roofing services.

Checkatrade Verified reviewer - Job location: HP4

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

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: SL6

Fixed the roof, including all the felting and repaired the chimney. - Good communication throughout. Good work. Very happy with the service.

Checkatrade Verified reviewer - Job location: SL6

Roof repair - Great, really friendly and nice team

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: HP13

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.

Checkatrade Verified reviewer - Job location: HP16

Leak in the roof- Very polite and professional. Job was completed professionally at a very good price. Would highly recommend

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: SL9

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.

Checkatrade Verified reviewer - Job location: SL6

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

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: SL6

Fixed the roof, including all the felting and repaired the chimney. - Good communication throughout. Good work. Very happy with the service.

Checkatrade Verified reviewer - Job location: SL6

Roof repair - Great, really friendly and nice team

Checkatrade Verified reviewer - Job location: SL6

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.

Checkatrade Verified reviewer - Job location: SL6
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Our Process
Inspection and advice

We inspect the flat roof, identify weak points and explain whether a repair or replacement is the best long-term option.

Clear quote and scheduling

You receive a clear written quote and realistic timescale, with no vague pricing or moving goalposts.

Installation, repair, and final checks

We complete the work carefully, then check outlets, seals and edges to make sure everything is watertight before we leave.

[FAQ]

Frequently Asked Questions

How long does a flat roof usually last?
Can a leaking flat roof be repaired?
What causes flat roof leaks?
Is EPDM better than felt?
Do you offer emergency flat roof repairs in Lightwater?
Can insulation be added during flat roof replacement?
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