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Skylight installation in London

Installing new skylights — cutting the opening, fitting the unit, flashing it in properly.

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

Typical cost in London

£980–£3,660

Mid-market: £1,710. 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

A new skylight install involves cutting an opening in the roof structure, trimming the rafters, fitting the frame, and flashing it into the surrounding covering. Velux is the dominant UK brand; Fakro and Keylite are credible alternatives at lower price points.

The structural work requires attention to rafter trimming — Building Regulations require any rafter that is cut to be supported by the trimmer either side. A structural calculation is sometimes needed on larger openings.

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

  • Skylight size and brand.
  • Whether structural trimming of rafters is needed (usually yes on anything larger than a single rafter bay).
  • Interior plasterboard reveal work.
  • Scaffold access for the roofer working outside.

Timeline: Usually 1–2 days per skylight.

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

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Common questions

Do I need Building Regulations approval?

Yes, because structural rafters are being cut. A registered roofer or builder can usually notify Building Control or a private approved inspector. Smaller roof windows in existing rafter bays may be simpler; anything larger needs a structural sign-off.

Is Velux worth paying more for?

Velux spares and replacement parts are widely available for 30+ years, which matters when seals and gaskets eventually need replacing. Cheaper brands can be fine if you don’t mind replacing the whole unit when something fails.

What does skylight installation typically cost in London?

A typical skylight installation job in London falls in the £980–£3,660 range, with the middle of the market around £1,710. 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.

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