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

Signs you need roof lantern replacement
- Distorted or sagging frame
- Rotten timber throughout
- 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 Mid 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 Mid Glamorgan?
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?
- 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.
Roof lantern replacement in Mid Glamorgan: questions
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.
Which towns in Mid Glamorgan do you cover?
All of Mid Glamorgan, including Bridgend, Rhondda, Tonypandy, Merthyr Tydfil, Pontypridd, Aberdare. Rural and remote addresses are covered by arrangement.
How do I get a price for roof lantern replacement in Mid 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 Mid Glamorgan
- Roof lantern resealing in Mid Glamorgan
- Eaves beam and gutter repairs in Mid Glamorgan
- Upstand and kerb repairs in Mid Glamorgan
- Flat roof junction and flashing repairs in Mid Glamorgan
- Misted glass unit replacement in Mid Glamorgan
- Timber roof lantern repairs in Mid Glamorgan
Nearby areas
- Roof lantern replacement in South Glamorgan
- Roof lantern replacement in West Glamorgan
- Roof lantern replacement in Gwent
- Roof lantern replacement in Powys
- Roof lantern replacement in Dyfed
More about roof lantern replacement · All roof lantern repairs in Mid Glamorgan