We're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed. Send photos from Rhondda (CF42) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need roof lantern replacement
- Several misted or cracked units
- Rotten timber throughout
- Single-glazed or very poor thermal performance
Why it happens
Age
Older lanterns can't be brought up to modern performance with repairs alone.
Structural damage
Impact or movement distorts the frame.
About Rhondda and the CF42 area
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.
Rhondda is around 12 miles from Bridgend, and both are within our Mid Glamorgan coverage.
We also cover nearby Tonypandy (3 miles), Aberdare (4 miles), Pontypridd (6 miles).
How much should it cost?
Most roof lantern replacement jobs come in between £1,995 and £4,995 ex VAT (£2,394–£5,994 including 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 Rhondda: questions
How do I get a price for roof lantern replacement in Rhondda?
Send a few photos of the lantern and the problem, with your Rhondda postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Rhondda?
Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.
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.
Other lantern repairs in Rhondda
- Flat roof junction and flashing repairs in Rhondda
- Misted glass unit replacement in Rhondda
- Timber roof lantern repairs in Rhondda
- Aluminium roof lantern repairs in Rhondda
- Opening vent and actuator repairs in Rhondda
- Commercial roof lantern repairs in Rhondda
Roof lantern replacement near Rhondda
More about roof lantern replacement · All roof lantern repairs in Rhondda