We carry out glazing bar and capping repairs in Canvey Island and across the SS8 area. Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets.

What you might be seeing
- A capping visibly higher than its neighbours
- Gasket rubber poking out, cracked or missing
- Water running down one glazing bar inside
Why it happens
Gasket shrinkage
Rubber gaskets shrink back from the ends over time, leaving a gap at the ridge or eaves.
Damage
Ladders, window cleaning or someone stepping on a lantern can bend a capping or unclip it.
Covering Canvey Island and nearby
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 Canvey Island as part of Essex, about 16 miles from Chelmsford.
If you're just outside Canvey Island, we also cover South Benfleet (2 miles), Rayleigh (5 miles), Southend-on-Sea (6 miles).
Guide prices for glazing bar and capping repairs in Canvey Island
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?
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.
Glazing bar and capping repairs in Canvey Island: questions
Can you repair a lantern someone else installed in Canvey Island?
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 Canvey Island do you cover?
As well as Canvey Island, we cover nearby South Benfleet, Rayleigh, Southend-on-Sea, Basildon and the rest of Essex.
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 Canvey Island
- Roof lantern resealing in Canvey Island
- Flat roof junction and flashing repairs in Canvey Island
- Slipped glass panel repairs in Canvey Island
- Timber roof lantern repairs in Canvey Island
- Aluminium roof lantern repairs in Canvey Island
- Urgent leak make-safe in Canvey Island
Glazing bar and capping repairs near Canvey Island
More about glazing bar and capping repairs · All roof lantern repairs in Canvey Island