Timber roof lanterns are beautiful and repairable, but they need sound paint, sound beads and dry timber. Send photos from Carshalton (SM5) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Flaking or blistered paint on bars or eaves
- Soft timber when pressed
- Leaks at bar joints
What usually causes it?
Paint failure
Once the paint film breaks, water gets into the end grain and joints.
Water trapped by beads
Glazing beads and putty can trap water against the timber if their seals fail.
About Carshalton and the SM5 area
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 Carshalton as part of Greater London, about 9 miles from Westminster.
Close by, we also cover Wallington (1 mile), Sutton (2 miles), Mitcham (2 miles).
Guide prices for timber roof lantern repairs in Carshalton
Guide price for timber roof lantern repairs: £395–£1,995 ex VAT (£474–£2,394 inc 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?
- Send photosWhatsApp or upload a few photos and tell us when it leaks.
- Guide priceWe reply with a guide price and whether a visit is needed.
- Fixed price in writingYou approve the price and the date before anything starts.
- Repair and testWe fix what's failed, water-test where it matters, and send photos.
Timber roof lantern repairs in Carshalton: questions
Do you cover Carshalton?
Yes. We cover Carshalton, including the SM5 postcode area, as part of Greater London. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Which places near Carshalton do you cover?
As well as Carshalton, we cover nearby Wallington, Sutton, Mitcham, Morden and the rest of Greater London.
How much do timber lantern repairs cost?
From about £395 ex VAT for localised repairs up to around £1,995 for extensive restoration of a standard lantern, confirmed in writing before work starts.
How often does a timber lantern need painting?
It depends on exposure and paint system; many need redecorating every five to eight years.
Other lantern repairs in Carshalton
- Flat roof junction and flashing repairs in Carshalton
- Slipped glass panel repairs in Carshalton
- Condensation diagnosis and fixes in Carshalton
- Roof lantern respraying in Carshalton
- Flat rooflight and skylight repairs in Carshalton
- Roof lantern replacement in Carshalton
Timber roof lantern repairs near Carshalton
More about timber roof lantern repairs · All roof lantern repairs in Carshalton