The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Sunbury-on-Thames (TW16) and we'll tell you which it is — with the price agreed in writing before any work.

Is it time for upstand and kerb repairs?
- Soft or spongy timber at the base of the lantern
- Roof membrane not lapped up the kerb, or peeling off it
- Cold, damp or mouldy lining around the opening
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.
Membrane not dressed up
The flat roof covering should run up the kerb and be trimmed or flashed. If it stops short, water gets behind it.
Roof lanterns in Sunbury-on-Thames
Drier, sunnier parts of the UK are kinder to seals than the wet west, but strong sun ages sealant, gaskets and plastic end caps, and south- or west-facing lanterns can make rooms very warm. Solar control glass and an opening vent help.
We cover Sunbury-on-Thames as part of Surrey, about 13 miles from Guildford.
If you're just outside Sunbury-on-Thames, we also cover Walton-on-Thames (1 mile), Hampton (2 miles), Hanworth (3 miles).
What should you expect to pay in Sunbury-on-Thames?
Typical range: £395–£1,295 ex VAT, which is £474–£1,554 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.
Upstand and kerb repairs in Sunbury-on-Thames: questions
How do I get a price for upstand and kerb repairs in Sunbury-on-Thames?
Send a few photos of the lantern and the problem, with your Sunbury-on-Thames postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Sunbury-on-Thames?
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.
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 Sunbury-on-Thames
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- Condensation diagnosis and fixes in Sunbury-on-Thames
- Cleaning and maintenance in Sunbury-on-Thames
- Roof lantern replacement in Sunbury-on-Thames
Upstand and kerb repairs near Sunbury-on-Thames
More about upstand and kerb repairs · All roof lantern repairs in Sunbury-on-Thames