Flat Roofs in London
Complete flat roof installations and replacements using GRP fibreglass and high-performance felt systems — fully insulated, seamlessly finished, and compliant with BS6229 flat roof standards.
Every job. Every time. No exceptions.
When you book flat roofs with Twelve Roofing, here's exactly what you get — zero surprises, zero upsells.
What to expect when you book.
Request a Quote
Tell us what you need in 30 seconds. Share your location, urgency, and roof details through our friction-free form.
We Contact You
A qualified roofer calls within 10 minutes with a transparent, upfront quote. No hidden fees, ever.
Job Completed
We arrive on time, fix the roof properly, and clear the site before we leave — backed by our workmanship guarantee.
Homeowners trust us. Here's why.
"Storm tore half the tiles off at 11pm on a Sunday. They arrived within the hour, tarpaulined it in the rain, and the permanent repair matched the original slate exactly."
"Full GRP flat roof over our extension. Done in a day, site left spotless, and it's survived two winters without a single drop."
"The drone survey found a leak two other roofers missed — a cracked slate under the valley. Fixed in a morning, no fuss, no scaffolding circus."
"Our go-to for three years running — repairs, guttering, fascias. They never oversell, always turn up when they say, and the finish is immaculate."
Proudly covering South & West London.
Wherever you are in the area, a qualified Twelve Roofing roofer is close by. Hover or tap any pin to see the areas we serve.
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No account needed. No spam. Just a real, qualified roofer with a fair, upfront price.