Flat roofs in West London cost £1,200–£3,000 for a typical extension in GRP fibreglass, £1,000–£2,500 in EPDM rubber, and £800–£2,000 for a garage. Includes tapered insulation, drainage falls and upst.
Flat roofs in West London cost £1,200–£3,000 for a typical extension in GRP fibreglass, £1,000–£2,500 in EPDM rubber, and £800–£2,000 for a garage. Includes tapered insulation, drainage falls and upstand detailing. Free quotes — call 0203 302 2547.
We have been providing how much does a flat roof cost in services across all seven West London boroughs for over 20 years. We know the local housing stock, the common problems specific to each area, and the most durable solutions. Every job is carried out by our own team — never subcontracted. All work carries our written guarantee.
Every how much does a flat roof cost in project follows the same professional process: free inspection and photographic assessment, written quote with itemised costs, scheduled work carried out by our qualified team, post-completion photographs and guarantee documentation. No shortcuts, no surprises.
Call 0203 302 2547 for a free, no-obligation inspection and quote. We typically inspect within 2–3 working days. Emergency work is same-day.
BS 6229:2018 Flat Roofs with Continuously Supported Flexible Coverings specifies minimum design standards for flat roof drainage, insulation and membrane performance. All our flat roof installations comply with this standard — ensuring correct falls, adequate insulation and durable weatherproofing.
Source: BS 6229:2018
"Slate repair matching originals — professional and tidy. Highly recommend for anyone in Chiswick."
"Moss treatment — roof looks new — professional and tidy. Highly recommend for anyone in Pinner."
"Chimney work — no more damp — professional and tidy. Highly recommend for anyone in Wembley."
Flat roofs in West London cost £1,200–£3,000 for a typical extension in GRP fibreglass, £1,000–£2,500 in EPDM rubber, and £800–£2,000 for a garage. Includes tapered insulation, drainage falls and upst
Yes — we cover Ealing, Hounslow, Hillingdon, Harrow, Brent, Richmond and Hammersmith & Fulham.
Yes — NFRC registered, fully insured with £5m public liability, 10-year guarantee on all work.
Standard work: inspection within 2–3 days. Emergency: same-day response. Call 0203 302 2547.
Yes — every quote is free, written, no-obligation and includes a full inspection.
10 years on major work, 5 years on chimney and flashing work, 2 years on minor repairs. Written and transferable.
We photograph every completed project and can show you examples of similar work in your area.
How much a roofing job costs depends on what is actually wrong.
When it is not the answer: If you already have a detailed, itemised quote from a reputable roofer, these guide prices confirm whether it is in the right range. Read the full guide.
Describe the problem. We give a rough range on the phone.
On-site inspection. Every defect photographed.
Itemised: materials, labour, scaffold, waste, VAT.
Use the pricing table below to check our quote is fair.
| Job | Typical duration |
|---|---|
| Phone estimate | Same call |
| On-site survey | Within 2-3 days |
| Written quote | Within 24 hours of survey |
| Work start | Within 1-2 weeks of acceptance |
Phone estimates are ranges. Exact pricing needs an on-site survey.
| Job | Typical range | Notes |
|---|---|---|
| Extension — GRP | £1,400-£3,200 | Most common |
| Extension — EPDM | £1,200-£2,800 | Flexible |
| Garage | £900-£2,200 | By size |
| Dormer/balcony | £1,800-£4,000 | Complex |
Worked example: 14m2 GRP extension: strip, insulation, membrane, labour — £1,720.
No deposit under £2,000. Balance on completion.
Covering W3-W14, SW6, SW13-14, NW2-10, TW1-13, UB1-10, HA0-9 and surrounding postcodes.
All work carries our 10-year workmanship guarantee regardless of job size.
If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.
No call-out fees. No obligation. Honest quote from a local West London roofer.
0203 302 2547📞 Call Now: 0203 302 2547