In Clevedon, as everywhere, the junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Splits, blisters or lifted edges in the roof covering by the kerb
- Missing or loose edge trims and flashings
- Ponding on the roof next to the lantern
Why it happens
Cracked GRP
Fibreglass roofs can crack at the kerb corner where movement concentrates.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
Roof lanterns in Clevedon
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 Clevedon as part of Somerset, about 31 miles from Taunton.
If you're just outside Clevedon, we also cover Nailsea (4 miles), Portishead (5 miles), Weston-super-Mare (8 miles).
Guide prices for flat roof junction and flashing repairs in Clevedon
Guide price for flat roof junction and flashing repairs: £245–£695 ex VAT (£294–£834 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?
Most lantern repairs in England need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 apply and we confirm how the work will be signed off before we start. 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.
Flat roof junction and flashing repairs in Clevedon: questions
Can you repair a lantern someone else installed in Clevedon?
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.
Which places near Clevedon do you cover?
As well as Clevedon, we cover nearby Nailsea, Portishead, Weston-super-Mare, Bristol and the rest of Somerset.
Do you repair the whole flat roof?
We repair the area around the lantern. If the wider roof is failing we'll tell you and can quote, but we won't push a new roof if a local repair will do.
Can you repair a GRP roof without it showing?
Repairs are colour-matched as closely as possible, but new topcoat next to weathered topcoat can look slightly different at first.
Other lantern repairs in Clevedon
- Roof lantern resealing in Clevedon
- Misted glass unit replacement in Clevedon
- Slipped glass panel repairs in Clevedon
- Condensation diagnosis and fixes in Clevedon
- Urgent leak make-safe in Clevedon
- Roof lantern replacement in Clevedon
Flat roof junction and flashing repairs near Clevedon
More about flat roof junction and flashing repairs · All roof lantern repairs in Clevedon