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Greater London · SW13

Roof lantern leak repairs in Barnes

For roof lantern leak repairs in Barnes, the job is simple to describe: we trace where the water gets in and repair the seal, capping, ridge, eaves or kerb that has failed. Photos first, a guide price back, then a written fixed price.

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We carry out roof lantern leak repairs in Barnes and across the SW13 area. A roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern.

Rainwater running down an internal glazing bar of a roof lantern above a kitchen

What you might be seeing

  • Drips from a glazing bar or the eaves beam when it rains
  • Brown staining or bubbling paint on the plasterboard lining around the lantern
  • Water running down the inside face of the glass

Common causes we find

Failed silicone or glazing tape

UV and thermal movement break down the seal between capping, gasket and glass. Once a gap opens, water tracks along the bar and drops at the lowest point.

Blocked eaves drainage

Most lanterns collect water in a channel inside the eaves beam and let it out through weep slots. Leaves, moss and grit block the slots and the channel overflows indoors.

Roof lanterns in Barnes

Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.

London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.

We cover Barnes as part of Greater London, about 5 miles from Westminster.

If you're just outside Barnes, we also cover Chiswick (1 mile), Putney (2 miles), Fulham (2 miles).

Guide prices for roof lantern leak repairs in Barnes

Guide price, per lantern£195–£595 ex VAT£234–£714 inc VAT

Typical range: £195–£595 ex VAT, which is £234–£714 with VAT, per lantern. Towers or scaffold, where needed, are priced into the quote. Your fixed price is confirmed in writing before any work starts.

Do you need permission in England?

In England, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010, so we set out the route in writing first. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.

How does it work?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Roof lantern leak repairs in Barnes: questions

Can you repair a lantern someone else installed in Barnes?

Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.

Which places near Barnes do you cover?

As well as Barnes, we cover nearby Chiswick, Putney, Fulham, Shepherds Bush and the rest of Greater London.

Can you fix the leak in the rain?

We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.

Do I need to be home?

If we need to water-test or check the inside of the lantern, yes. Exterior-only work can sometimes be done with access arranged in advance.

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