We carry out glazing bar and capping repairs in Chepstow and across the NP16 area. Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets.
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
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 Chepstow 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.
Chepstow is around 14 miles from Newport, Gwent, and both are within our Gwent coverage.
Neighbouring places we cover include Monmouth (12 miles), Newport, Gwent (14 miles), Cwmbran (15 miles).
What should you expect to pay in Chepstow?
Guide price for glazing bar and capping repairs: £165–£395 ex VAT (£198–£474 inc 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 Wales?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.
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 Chepstow: questions
Do you cover Chepstow?
Yes. We cover Chepstow, including the NP16 postcode area, as part of Gwent. 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 Chepstow do you cover?
As well as Chepstow, we cover nearby Monmouth, Newport, Gwent, Cwmbran, Pontypool and the rest of Gwent.
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 Chepstow
- Ridge and hip repairs in Chepstow
- Eaves beam and gutter repairs in Chepstow
- Slipped glass panel repairs in Chepstow
- Cleaning and maintenance in Chepstow
- Roof lantern replacement in Chepstow
- Orangery lantern repairs in Chepstow
Glazing bar and capping repairs near Chepstow
More about glazing bar and capping repairs · All roof lantern repairs in Chepstow