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Flat Roofing Winchester
Need a flat roof repair or replacement in Winchester? We install and fix felt, GRP and EPDM flat roofs for homes, extensions and garages across SO22 and SO23, with clear quotes and tidy workmanship.
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Flat Roofing Services in Winchester
Our Services
Flat Roof Installation
Flat Roof Replacement
Flat Roof Repairs
Flat Roof Inspections
Emergency Flat Roof Repairs
About Our Flat Roofing in Winchester
We focus on doing flat roofs properly, with the right build-up, proper joins, and details that stop problems before they start. Most flat roof failures come from rushed work or weak edges, so we take the time to get the prep and finish right. If you’re in Winchester, SO22, SO23, or nearby villages, we’ll give you a clear plan and a roof that stays watertight.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roof Types We Install
Different roofs need different systems. We’ll recommend the best option based on the roof shape, how it’s used, and your budget.
EPDM Rubber Roofing
EPDM is a tough rubber membrane that works brilliantly on many flat roofs, especially where you want a clean look and long service life. It handles temperature changes well and is a solid choice for garages, extensions, and outbuildings.
GRP Fibreglass Roofing
GRP creates a seamless finish that’s great for flat roofs where you want a neat, hard-wearing surface. It’s commonly used on extensions, dormers, and balconies. When installed correctly, it’s highly resistant to leaks and cracking.
Torch-On Felt Roofing
Modern torch-on felt is nothing like old-style felt that failed early. Installed in layers with proper detailing, it’s a dependable option that offers strong waterproofing and good value, especially for straightforward flat roof areas.
Liquid Roofing Systems
Liquid systems can be ideal for awkward roof shapes, tricky details, and areas where a membrane is hard to lay neatly. They cure into a waterproof surface that seals around edges and penetrations, which helps reduce weak points.
Why Homeowners in Winchester Choose Us
Because you want it fixed once, not patched forever. We turn up, inspect properly, explain your options in plain English, and quote clearly. We keep the site tidy, respect your home, and focus on workmanship that holds up through Winchester weather, not just on the day the job is done.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Rated 5 Stars by Homeowners Across
Winchester
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
Leak in the roof- Very polite and professional. Job was completed professionally at a very good price. Would highly recommend
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 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
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.
We inspect the roof properly, show you what’s failing, and explain what needs doing now versus what can wait.
You get a clear written quote, a straightforward timeline, and a booking that actually sticks.
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We complete the work carefully, then check drainage, seals, and edges so the roof is watertight before we leave.
Frequently Asked Questions
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