Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos from Clevedon (BS21) and we'll tell you which it is — with the price agreed in writing before any work.
Signs you need glazing bar and capping repairs
- Gasket rubber poking out, cracked or missing
- Water running down one glazing bar inside
- End caps missing at the bottom of a bar
What usually causes it?
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.
Covering Clevedon and nearby
Wind-driven rain is the real test of a roof lantern, and the wetter west sees plenty of it. Leaks that appear only in a storm from one direction usually point to the cappings or eaves on that face — a useful clue when you send us photos.
From Taunton to Clevedon is roughly 31 miles — all part of the Somerset area we cover.
We also cover nearby Nailsea (4 miles), Portishead (5 miles), Weston-super-Mare (8 miles).
How much should it cost?
Most glazing bar and capping repairs jobs come in between £165 and £395 ex VAT (£198–£474 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?
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.
Glazing bar and capping repairs in Clevedon: questions
Do you need to visit to price glazing bar and capping repairs?
Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.
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.
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 Clevedon
- Flat roof junction and flashing repairs in Clevedon
- Cracked lantern glass replacement in Clevedon
- Condensation diagnosis and fixes in Clevedon
- Timber roof lantern repairs in Clevedon
- Aluminium roof lantern repairs in Clevedon
- Cleaning and maintenance in Clevedon
Glazing bar and capping repairs near Clevedon
More about glazing bar and capping repairs · All roof lantern repairs in Clevedon