We carry out glazing bar and capping repairs in Great Yarmouth and across the NR30 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
- End caps missing at the bottom of a bar
Common causes we find
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 Great Yarmouth and nearby
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
We cover Great Yarmouth as part of Norfolk, about 18 miles from Norwich.
Neighbouring places we cover include Lowestoft (9 miles), Norwich (18 miles).
Guide prices for glazing bar and capping repairs in Great Yarmouth
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 Great Yarmouth: 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 Great Yarmouth do you cover?
As well as Great Yarmouth, we cover nearby Lowestoft, Norwich and the rest of Norfolk.
How much do capping and gasket repairs cost?
Usually £165–£395 ex VAT per lantern depending on how many bars are affected, confirmed in writing before work starts.
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.
Other lantern repairs in Great Yarmouth
- Upstand and kerb repairs in Great Yarmouth
- Misted glass unit replacement in Great Yarmouth
- Slipped glass panel repairs in Great Yarmouth
- Roof lantern respraying in Great Yarmouth
- Leak investigation and inspection in Great Yarmouth
- Orangery lantern repairs in Great Yarmouth
Glazing bar and capping repairs near Great Yarmouth
More about glazing bar and capping repairs · All roof lantern repairs in Great Yarmouth