RoofersBook

Flat roof replacement in London

Full flat roof replacement — new covering, new falls, new upstands, new deck where needed.

Greater London · updated 2026-04-11 · 1 local roofer in directory

Typical cost in London

£98–£220/m²

Mid-market: £146/m². Local factor 1.22× national baseline (higher labour/access costs in this region). Ranges are indicative; real quotes vary with scope, access, and materials.

See the full UK roofing cost guide for the methodology and the factors that move a quote up or down.

What the job involves

Flat roof replacement is priced per square metre of covering, with the system choice (EPDM, GRP, felt, TPO) driving most of the variance. A typical small extension is 15–25 m², which puts full replacement in the £1,200–£4,500 range before scaffold and skip.

A proper replacement includes checking and usually replacing the deck underneath, creating sufficient falls to avoid ponding, and dressing upstands properly into the abutting wall or parapet. Cheap quotes often skip these details.

London — local context

Traditional material: Welsh slate on Georgian and Victorian terraces, clay tile in the outer boroughs.

London has the highest concentration of listed buildings and conservation areas in England, which commonly restrict re-roofs to like-for-like materials; inner boroughs also add parking suspension fees that push scaffold-assisted jobs above the baseline.

What changes the price

  • System choice — felt cheapest, EPDM mid, GRP or single-ply most expensive.
  • Area in m² plus complexity (penetrations, upstands, rooflights).
  • Whether the deck underneath is sound or needs replacing.
  • Scaffold access and waste removal.

Timeline: Usually 2–5 days on site depending on size.

Roofers serving London

Listings are drawn from public Companies House records and enriched where verified. See our methodology for how we build and rank this directory.

  • London Elite Roofers

    New roof · Re-roof · Flat roofing · Commercial

    Verified listing

Directory being expanded — if you're a London roofer and want to be listed, add your business.

Get three quotes for flat roof replacement in London

Tell us about the job once and we pass the brief to suitable roofers who cover London and do this type of work. Free, no obligation, no pressure.

Start my quote request

Common questions

Which flat roof system lasts longest?

TPO and PVC single-ply for commercial-grade installation, 30+ years. EPDM rubber is the best domestic choice, 25–40 years. GRP is 25–35 years. Felt is 10–15 years — cheap up front but replaced most often.

Do I need planning permission for a flat roof replacement?

Like-for-like replacement is usually permitted development and doesn’t need planning permission. It does need to comply with Building Regulations Part L (see the Part L guide). Listed buildings and conservation areas are exceptions.

What does flat roof replacement typically cost in London?

A typical flat roof replacement job in London falls in the £98–£220/m² range, with the middle of the market around £146/m². London’s labour and access factor (1.22× the national baseline) means prices run slightly above the UK average. Actual quotes vary with access, materials, and specifics of the job.

Are there any London-specific things that affect price?

London has the highest concentration of listed buildings and conservation areas in England, which commonly restrict re-roofs to like-for-like materials; inner boroughs also add parking suspension fees that push scaffold-assisted jobs above the baseline.

How many roofers serve London through this site?

1 company in our directory currently serve London. More are added regularly as we verify new listings from Companies House and trade body records.

Related guides

Independent rankings — no pay-to-rank. See Methodology, Complaints & corrections, Privacy.