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Northern Ireland · County Down

Glazing bar and capping repairs in County Down

Across County Down — Newry, Bangor, Down, Newtownards and beyond — we re-seat or replace lifted cappings, perished gaskets and loose glazing bar fixings. Photos first, then a written fixed price.

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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 County Down, with a guide price from your photos and a fixed price in writing before any work starts.

Roof lantern glazing bar with the top capping lifted to show the gasket beneath

Signs you need glazing bar and capping repairs

  • A capping visibly higher than its neighbours
  • Gasket rubber poking out, cracked or missing
  • 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.

Damage

Ladders, window cleaning or someone stepping on a lantern can bend a capping or unclip it.

Roof lanterns in County Down

Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.

Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.

What should you expect to pay for glazing bar and capping repairs in County Down?

Guide price, per lantern£165–£395 ex VAT£198–£474 inc VAT

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 Northern Ireland?

Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Northern Ireland. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations (Northern Ireland) 2012; we confirm in writing which route applies before any replacement. Listed buildings in Northern Ireland need listed building consent from the council for alterations; check with the council's planning service before changing a lantern on a listed property.

How does it work?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Glazing bar and capping repairs in County Down: questions

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.

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 County Down do you cover?

All of County Down, including Newry, Bangor, Down, Newtownards, Banbridge, Downpatrick, Holywood. Rural and remote addresses are covered by arrangement.

How do I get a price for glazing bar and capping repairs in County Down?

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 County Down

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More about glazing bar and capping repairs · All roof lantern repairs in County Down

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