Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos from Surbiton (KT5) and we'll tell you which it is — with the price agreed in writing before any work.
Is it time for glazing bar and capping repairs?
- A capping visibly higher than its neighbours
- Water running down one glazing bar inside
- Rattling or whistling in wind
Common causes we find
Gasket shrinkage
Rubber gaskets shrink back from the ends over time, leaving a gap at the ridge or eaves.
Fixings working loose
Screws and clips that hold the capping relax with thermal movement, so the clamp on the glass weakens.
About Surbiton and the KT5 area
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.
From Westminster to Surbiton is roughly 10 miles — all part of the Greater London area we cover.
Close by, we also cover New Malden (2 miles), Esher (3 miles), Hampton (3 miles).
How much should it cost?
Typical range: £165–£395 ex VAT, which is £198–£474 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?
- 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.
Glazing bar and capping repairs in Surbiton: questions
Do you cover Surbiton?
Yes. We cover Surbiton, including the KT5 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 Surbiton do you cover?
As well as Surbiton, we cover nearby New Malden, Esher, Hampton, Ewell and the rest of Greater London.
Can a capping just be clipped back on?
Sometimes, if nothing underneath has failed. We check the gaskets first, because clipping a capping over a perished gasket doesn't stop the leak.
Do you repair uPVC and timber lantern bars too?
Yes. Timber lanterns use different beads and cappings, and we repair those as part of timber lantern repairs.
Other lantern repairs in Surbiton
- Roof lantern leak repairs in Surbiton
- Eaves beam and gutter repairs in Surbiton
- Cracked lantern glass replacement in Surbiton
- Solar control and self-cleaning glass upgrades in Surbiton
- Condensation diagnosis and fixes in Surbiton
- Roof lantern respraying in Surbiton
Glazing bar and capping repairs near Surbiton
More about glazing bar and capping repairs · All roof lantern repairs in Surbiton