PRICE GUIDE · TRADES & CONSTRUCTION · 2026–2027
Flat Roofing cost in the UK
£1,200–£6,500 per roof. Typically £2,800.
A new flat roof in the UK costs £1,200–£6,500, with around £2,800 typical for an EPDM rubber roof on an extension. Size, the material — felt, rubber, fibreglass or single-ply — and whether the deck underneath is rotten decide the price, with scaffolding and insulation on top.
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HOW MUCH IT COSTS
How much does a flat roofing cost in the UK?
| Low end | £1,200 | a felt or rubber garage roof |
|---|---|---|
| Typical | £2,800 | what most people pay |
| High end | £6,500 | a large single-ply or GRP roof with a new deck |
Locufy guide prices for 2026–2027. Updated 2026. A national range, not a quote — enter your town above for real prices from the builders and trades near you.
What moves the price
- Roofing material — torch-on felt is cheapest, while EPDM rubber, GRP fibreglass and single-ply cost more but last longer
- Size of the flat roof — a garage roof is a small job next to a large kitchen extension
- Condition of the deck — rotten boards under the old covering have to be replaced before the new flat roof goes on
- Insulation upgrade — bringing a flat roof up to Building Regulations insulation standards adds cost
- Access and height — a first-floor flat roof needs scaffolding where a garage roof may not
- Weather — rain and cold stop flat roofing work, so winter jobs can take longer
Building and repair prices in the UK are up 6% over five years (ONS Consumer Price Inflation, Services for maintenance and repair, to 2026 August). Five years ago a typical flat roofing would have cost about £2840 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What a flat roofing booking includes
Takes: One day for a garage roof, two to three days for an extension roof. Not included: Scaffolding, new gutters, roof lights and an insulation upgrade are often quoted separately — see the related guides below.
WHAT PEOPLE BOOK
Common flat roofing jobs
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Flat Roofing near you, with prices shown
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How to pay less
- Choose EPDM or GRP flat roofing for a longer life rather than repeatedly patching felt
- Replace the flat roof before leaks rot the deck, which turns a re-cover into a bigger job
- Book flat roof work in late spring or summer, when dry weather makes the job quicker
Before you book
- Replacing more than a quarter of a flat roof usually needs it insulated to current Building Regulations
- Ask what guarantee the roofer gives on the new flat roof covering and the workmanship
- Check the roofer uses scaffolding or edge protection that meets work-at-height rules
- Ask whether the flat roofing quote includes the deck repairs if rot is found
Flat Roofing cost: questions people ask
£1,200–£6,500 per roof, around £2,800 typical. A small felt garage roof costs least; a large single-ply roof with a new deck and insulation costs most.
A garage roof usually takes a day. An extension roof takes two to three days, more if the deck needs replacing.
EPDM rubber and GRP fibreglass typically last decades with little maintenance, while felt is cheaper but wears out sooner.
Replacing a large part of a flat roof usually counts as renovating a thermal element, so insulation must be brought up to standard and building control notified, unless a registered installer self-certifies.
Scaffolding, gutters, roof lights and an insulation upgrade are often listed separately.
They are Locufy guide prices for the UK, taken from published UK flat roofing cost guides — a national range, not a quote. Size, material and the deck set your price.