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South Glamorgan · CF61

Roof lantern replacement in Llantwit Major

For roof lantern replacement in Llantwit Major, the job is simple to describe: we replace lanterns that are beyond economic repair, checking the kerb and re-making the junction. Photos first, a guide price back, then a written fixed price.

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We carry out roof lantern replacement in Llantwit Major and across the CF61 area. We're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed.

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

What you might be seeing

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

Common causes we find

Age

Older lanterns can't be brought up to modern performance with repairs alone.

Structural damage

Impact or movement distorts the frame.

Covering Llantwit Major and nearby

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.

We cover Llantwit Major as part of South Glamorgan, about 14 miles from Cardiff.

If you're just outside Llantwit Major, we also cover Cowbridge (4 miles), Bridgend (8 miles), Barry (9 miles).

Guide prices for roof lantern replacement in Llantwit Major

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

Guide price for roof lantern replacement: £1,995–£4,995 ex VAT (£2,394–£5,994 inc 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 Llantwit Major: questions

How do I get a price for roof lantern replacement in Llantwit Major?

Send a few photos of the lantern and the problem, with your Llantwit Major postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.

Do you need to visit to price roof lantern replacement?

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 does a replacement roof lantern cost?

Standard sizes typically £1,995–£4,995 ex VAT supplied and fitted; bespoke sizes and kerb rebuilds are priced on survey. You get the fixed price in writing first.

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.

Other lantern repairs in Llantwit Major

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