We carry out glazing bar and capping repairs in Basingstoke and across the RG21 area. Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets.

Is it time for glazing bar and capping repairs?
- Gasket rubber poking out, cracked or missing
- Water running down one glazing bar inside
- Rattling or whistling in wind
Common causes we find
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.
About Basingstoke and the RG21 area
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
From Southampton to Basingstoke is roughly 28 miles — all part of the Hampshire area we cover.
Neighbouring places we cover include Fleet (11 miles), Thatcham (12 miles), Yateley (12 miles).
How much should it cost?
Typical range: £165–£395 ex VAT, which is £198–£474 with 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.
Glazing bar and capping repairs in Basingstoke: questions
Do you cover Basingstoke?
Yes. We cover Basingstoke, including the RG21 postcode area, as part of Hampshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Which places near Basingstoke do you cover?
As well as Basingstoke, we cover nearby Fleet, Thatcham, Yateley, Farnham and the rest of Hampshire.
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 Basingstoke
- Eaves beam and gutter repairs in Basingstoke
- Slipped glass panel repairs in Basingstoke
- Condensation diagnosis and fixes in Basingstoke
- Aluminium roof lantern repairs in Basingstoke
- uPVC roof lantern repairs in Basingstoke
- Roof lantern respraying in Basingstoke
Glazing bar and capping repairs near Basingstoke
More about glazing bar and capping repairs · All roof lantern repairs in Basingstoke