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Wales · South Glamorgan

Roof lantern replacement in South Glamorgan

Dealing with a lantern that's past repair somewhere in South Glamorgan? We replace lanterns that are beyond economic repair, checking the kerb and re-making the junction. Our coverage includes Cardiff, Barry, Penarth and the villages around them.

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We're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed. We carry out roof lantern replacement across South Glamorgan, with a guide price from your photos and a fixed price in writing before any work starts.

Two installers lowering a new aluminium roof lantern onto a prepared timber kerb

Signs you need roof lantern replacement

  • Distorted or sagging frame
  • Repeated leaks after previous repairs
  • Single-glazed or very poor thermal performance

What usually causes it?

Structural damage

Impact or movement distorts the frame.

Rot

Timber lanterns left unmaintained.

Roof lanterns in South Glamorgan

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.

What should you expect to pay for roof lantern replacement in South Glamorgan?

Guide price, supplied and fitted£1,995–£4,995 ex VAT£2,394–£5,994 inc VAT

Typical range: £1,995–£4,995 ex VAT, which is £2,394–£5,994 with VAT, supplied and fitted. 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?

  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.

Roof lantern replacement in South Glamorgan: questions

Can the new lantern use the existing opening?

Usually, if the kerb is sound and the size suits a standard or made-to-measure lantern.

Will you tell me if repair is enough?

Yes. We'd rather do a repair that works than sell a lantern you don't need.

Which towns in South Glamorgan do you cover?

All of South Glamorgan, including Cardiff, Barry, Penarth, Cowbridge, Llantwit Major. Rural and remote addresses are covered by arrangement.

How do I get a price for roof lantern replacement in South Glamorgan?

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 South Glamorgan

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More about roof lantern replacement · All roof lantern repairs in South Glamorgan

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