Flat Roofing
Durable flat roofs with modern materials
Modern flat roofs for extensions, garages and dormers, including EPDM rubber, GRP fibreglass and torch-on felt systems.
Overview
Flat Roofing with GAC Roofline
Flat roofs have come a long way. Old-style felt roofs that blistered and leaked after a handful of winters have been replaced by modern systems that are far tougher, fully watertight and designed to last for decades with minimal maintenance.
We install and repair flat roofs on extensions, garages, dormers, porches, bay windows and commercial buildings. We'll recommend the right system for your building, whether that's a single-piece EPDM rubber membrane, a seamless GRP fibreglass finish or a multi-layer torch-on felt system.
A good flat roof starts beneath the surface. We check the timber deck, improve falls so water drains properly, and can add insulation to bring older roofs up to current thermal standards. We finish with neat trims, drip edges and outlets so the roof looks as good as it performs.
Warning signs
When do you need flat roofing?
Spotting problems early keeps repair costs down. If you notice any of the following, it's time to get in touch.
- Standing water (ponding) that stays for days after rain
- Blisters, bubbles, splits or cracks in the roof surface
- Soft or spongy areas when walked on
- Leaks or damp patches on the ceiling below
- Felt lifting or peeling at the edges
- Moss or vegetation growing on the roof
Why GAC Roofline
Roofing you can rely on
Choosing a roofer is about trust. Here's what you can expect every time you work with us, whatever the size of the job.
Honest advice
We'll only recommend work that's genuinely needed, backed up with photos so you can see the problem for yourself.
Fixed, written quotes
Clear, itemised prices agreed before work begins. The price we quote is the price you pay.
Guaranteed workmanship
Every job is completed to a high standard and covered by a written guarantee.
Fully insured
Comprehensive insurance cover for complete peace of mind while we work on your property.
Tidy & respectful
We protect your property, keep disruption to a minimum and leave the site clean every day.
Responsive service
We answer the phone, reply to messages and turn up when we say we will.
Reviews
What our customers say
Don't just take our word for it. Here's what local homeowners say about working with George and the team.
Our process
How our flat roofing service works
Clear steps from start to finish, so you always know what's happening and what comes next.
- 01
Survey
We inspect the existing roof, check the deck and measure up for an accurate quote.
- 02
Choose a system
We explain the pros and cons of EPDM, GRP and felt so you can choose with confidence.
- 03
Strip & install
The old covering is removed, the deck is repaired or replaced and the new system is laid.
- 04
Finish & guarantee
Trims and outlets are fitted, the site is cleared and your guarantee details are provided.
FAQs
Flat Roofing FAQs
Straight answers to the questions we're asked most often. Can't find what you're looking for? Just give us a call.
Which flat roof system is best?
It depends on the roof. EPDM is excellent for simple shapes and has a long lifespan, GRP suits roofs that will be walked on and needs no joints, and felt is a proven, cost-effective option. We'll recommend what fits your building and budget.
How long does a new flat roof take?
Most domestic flat roofs such as garages and single-storey extensions are completed in one to three days, weather permitting.
Can a flat roof be repaired rather than replaced?
Often, yes. Localised splits and failed joints can be repaired. If the deck is rotten or the covering has failed in multiple places, replacement is usually better value.
Can you add insulation to my flat roof?
Yes. When we replace a flat roof we can install a warm-roof insulation system, which makes the room below more comfortable and reduces heat loss.
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Areas we cover
Flat Roofing across Swindon and Wiltshire
GAC Roofline provides flat roofing for homes and businesses in Swindon, Wootton Bassett, Highworth, Cricklade and the surrounding Wiltshire area.
- Swindon
- Wootton Bassett
- Highworth
- Cricklade
- Wiltshire
All our services
Everything your roof needs
From small repairs to complete installations, one trusted team looks after every part of your roofline.
Need flat roofing?
Book a free, no-obligation inspection and receive a clear written quote. Friendly advice, honest pricing and quality workmanship, guaranteed.