The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Sutton (SM1) and we'll tell you which it is — with the price agreed in writing before any work.
What you might be seeing
- Water appearing below the lantern rather than from the glass
- Roof membrane not lapped up the kerb, or peeling off it
- Ponding water against the kerb after rain
What usually causes it?
Kerb too low
If the kerb doesn't rise enough above the finished roof, water sits against the joint during heavy rain.
Rotten timber
Untreated or wet timber kerbs rot from inside, so the lantern loses support and the seals open.
About Sutton and the SM1 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 Sutton as part of Greater London, about 11 miles from Westminster.
Close by, we also cover Carshalton (2 miles), Banstead (2 miles), Ewell (2 miles).
Guide prices for upstand and kerb repairs in Sutton
Most upstand and kerb repairs jobs come in between £395 and £1,295 ex VAT (£474–£1,554 including 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.
Upstand and kerb repairs in Sutton: questions
Do you cover Sutton?
Yes. We cover Sutton, including the SM1 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 Sutton do you cover?
As well as Sutton, we cover nearby Carshalton, Banstead, Ewell, Wallington and the rest of Greater London.
Can you add insulation to the kerb?
Yes. Insulated kerbs reduce cold bridging and help with condensation around the opening.
Will my ceiling need repairing?
If water has soaked the lining it may need making good after the leak is fixed; we can advise, but internal decorating isn't included unless quoted.
Other lantern repairs in Sutton
- Roof lantern resealing in Sutton
- Glazing bar and capping repairs in Sutton
- Ridge and hip repairs in Sutton
- Misted glass unit replacement in Sutton
- Flat rooflight and skylight repairs in Sutton
- Cleaning and maintenance in Sutton
Upstand and kerb repairs near Sutton
More about upstand and kerb repairs · All roof lantern repairs in Sutton