The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Nailsea (BS48) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need upstand and kerb repairs
- Soft or spongy timber at the base of the lantern
- Ponding water against the kerb after rain
- Cold, damp or mouldy lining around the opening
Common causes we find
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 Nailsea
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
We cover Nailsea as part of Somerset, about 32 miles from Taunton.
Close by, we also cover Portishead (3 miles), Clevedon (4 miles), Bristol (7 miles).
Guide prices for upstand and kerb repairs in Nailsea
Guide price for upstand and kerb repairs: £395–£1,295 ex VAT (£474–£1,554 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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 Nailsea: questions
Do you cover Nailsea?
Yes. We cover Nailsea, including the BS48 postcode area, as part of Somerset. 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.
How do I get a price for upstand and kerb repairs in Nailsea?
Send a few photos of the lantern and the problem, with your Nailsea postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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 Nailsea
- Roof lantern leak repairs in Nailsea
- Cracked lantern glass replacement in Nailsea
- Slipped glass panel repairs in Nailsea
- Timber roof lantern repairs in Nailsea
- Flat rooflight and skylight repairs in Nailsea
- Roof lantern replacement in Nailsea
Upstand and kerb repairs near Nailsea
More about upstand and kerb repairs · All roof lantern repairs in Nailsea