Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. We carry out glazing bar and capping repairs across Berkshire, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need glazing bar and capping repairs
- Gasket rubber poking out, cracked or missing
- Rattling or whistling in wind
- 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.
Roof lanterns in Berkshire
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
What should you expect to pay for glazing bar and capping repairs in Berkshire?
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 Berkshire: questions
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.
Which towns in Berkshire do you cover?
All of Berkshire, including Reading, Slough, Bracknell, Maidenhead, Wokingham, Newbury. Rural and remote addresses are covered by arrangement.
How do I get a price for glazing bar and capping repairs in Berkshire?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in Berkshire
- Roof lantern resealing in Berkshire
- Eaves beam and gutter repairs in Berkshire
- Flat roof junction and flashing repairs in Berkshire
- Slipped glass panel repairs in Berkshire
- uPVC roof lantern repairs in Berkshire
- Urgent leak make-safe in Berkshire
Nearby areas
- Glazing bar and capping repairs in Surrey
- Glazing bar and capping repairs in Buckinghamshire
- Glazing bar and capping repairs in Hampshire
- Glazing bar and capping repairs in Oxfordshire
- Glazing bar and capping repairs in Greater London
More about glazing bar and capping repairs · All roof lantern repairs in Berkshire