Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos from Llandrindod Wells (LD1) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need glazing bar and capping repairs
- A capping visibly higher than its neighbours
- Gasket rubber poking out, cracked or missing
- Water running down one glazing bar inside
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 Llandrindod Wells
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
Llandrindod Wells is around 19 miles from Newtown, and both are within our Powys coverage.
Neighbouring places we cover include Newtown (19 miles), Brecon (20 miles), Welshpool (30 miles).
Guide prices for glazing bar and capping repairs in Llandrindod Wells
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 Wales?
Most lantern repairs in Wales need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 (as applied in Wales) apply and we confirm how the work will be signed off before we start. 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 Llandrindod Wells: questions
Do you cover Llandrindod Wells?
Yes. We cover Llandrindod Wells, including the LD1 postcode area, as part of Powys. 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.
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.
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 Llandrindod Wells
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- Cracked lantern glass replacement in Llandrindod Wells
- Condensation diagnosis and fixes in Llandrindod Wells
- Flat rooflight and skylight repairs in Llandrindod Wells
- Cleaning and maintenance in Llandrindod Wells
- Commercial roof lantern repairs in Llandrindod Wells
Glazing bar and capping repairs near Llandrindod Wells
More about glazing bar and capping repairs · All roof lantern repairs in Llandrindod Wells