Flat Roof Replacement Cost UK 2026

A flat roof replacement on a typical garage or rear extension (15–25 m²) costs £1,500–£5,000 in 2026. EPDM (rubber) is the most common system; GRP (fibreglass) and bitumen are also popular.

Quick answer

Typical UK price range: £1,500–£9,000. Typical time: 2–5 days.

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Roof replacement calculator

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Roof type Tiled (concrete) Clay tile Natural slate Flat (EPDM/GRP)

Roof area (m²)

Region London South East South West Midlands North of England Scotland Wales Northern Ireland

Specification level Basic / standard Mid-range Premium / high-end

Extras

New felt + battens £400–£1,200 New ridge tiles £250–£700 Chimney removal £1,200–£3,500 Scaffolding £800–£2,500 Roof insulation upgrade £600–£2,000

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Estimate only. Prices reflect 2026 UK market data — get quotes from local tradespeople for accurate pricing.

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Budget Under £5,000 £5,000 – £15,000 £15,000 – £30,000 £30,000 – £60,000 £60,000+ Not sure

Timeline As soon as possible 1 – 3 months 3 – 6 months 6+ months Just researching

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Key points

• EPDM (rubber): £80–£130/m² — 30+ year life
• GRP (fibreglass): £100–£180/m² — 30+ year life
• Felt: £40–£80/m² — 10–15 year life (avoid for new work)
• Most jobs done in 2–3 days

Cost breakdown

Item	Low	High
Strip old roof	£200	£600
Insulation upgrade	£400	£1,200
EPDM membrane	£800	£2,500
Trims, edges, outlets	£250	£700
Labour	£500	£1,200

Cost by UK region

Region	Typical cost
London	£7,087
South East	£6,562
South West	£5,775
Midlands	£5,250
North England	£4,725
Scotland	£4,987
Wales	£4,725

How to save money

• Always upgrade the insulation while the membrane is off
• Choose EPDM for residential — fewer joints, longer life
• Specify a minimum 1:80 fall for drainage

How to find a trusted tradesperson

Get at least 3 quotes from vetted UK trade networks:

• Checkatrade
• MyBuilder
• Bark

FAQs

How long does a flat roof last?

EPDM: 30–50 years. GRP: 30+ years. Felt: 10–15 years. Avoid felt for new installs.

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Disclaimer: Prices are guide ranges based on 2026 UK market data. Get quotes from local tradespeople for accurate pricing.