Flat Roofing Petersfield
Flat roof installation, replacement and repairs in Petersfield, with clear quotes, tidy workmanship, and fixes that actually last.
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Flat Roofing Services in Petersfield
Our Services
Flat Roofing Done Properly
Most flat roof problems come down to poor detailing, blocked outlets, or old coverings that have reached the end of their life. We focus on correct installation standards, clean joints, strong perimeter protection, and proper drainage so your flat roof performs through heavy rain, wind, and winter weather.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Flat Roof Systems We Work With
We’ll recommend the best system based on your roof size, access, how the space is used, and your budget.
EPDM Rubber Roofing
A tough, flexible membrane that suits many residential flat roofs, especially where long-term weather resistance and low maintenance matter.
GRP Fibreglass Roofing
A seamless, durable option that’s ideal for smaller flat roofs and walk-on areas, giving a clean finish and strong waterproof protection.
Torch-On Felt Roofing
A proven multi-layer system when installed correctly, often chosen for garages and extensions where a reliable, cost-effective covering is needed.
Liquid Roofing Systems
Best for awkward details and refurbishment work, creating a continuous waterproof layer without the disruption of a full strip when suitable.
Why Petersfield Homeowners Choose Us?
You get honest advice, clear pricing, and a proper standard of work. We keep you informed, take care around your property, and focus on repairs that solve the issue rather than hiding it for a few months.
1,000
Project Completed
97%
Customer Satisfaction
40+
Years of Experience
Rated 5 Stars by Homeowners Across
Petersfield
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 start with an inspection to identify the cause of the problem, then explain whether a repair or replacement is the smarter option.

You receive a clear written quote and a straightforward timeline, so you know what’s included before any work begins.
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We complete the work neatly, then check seams, outlets and edges to confirm the roof is watertight before we leave.
Frequently Asked Questions
Many repairs can be completed in a single visit, depending on access, weather, and the type of flat roof system.
Not always. If the leak is localised, a repair may be enough. If the covering is failing in multiple areas, replacement is usually the better long-term choice.
Blocked outlets, split seams, cracked coverings, lifted edges, and ponding water are the most common issues we see.
Yes, depending on the cause. Sometimes it’s a drainage issue, other times the roof needs re-forming or sections replacing to restore proper falls.
It depends on roof size, foot traffic, and budget. EPDM, GRP, felt and liquid systems all suit different situations, we’ll talk you through the right option.
Yes. If water is getting in, we can attend quickly to stop further damage and secure the roof while arranging any follow-up work.

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