We carry out roof lantern replacement in Merthyr Tydfil and across the CF47 area. We're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed.
What you might be seeing
- Several misted or cracked units
- 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.
Roof lanterns in Merthyr Tydfil
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.
From Bridgend to Merthyr Tydfil is roughly 19 miles — all part of the Mid Glamorgan area we cover.
Neighbouring places we cover include Aberdare (4 miles), Tredegar (6 miles), Rhondda (7 miles).
How much should it cost?
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 Merthyr Tydfil: questions
Do you cover Merthyr Tydfil?
Yes. We cover Merthyr Tydfil, including the CF47 postcode area, as part of Mid Glamorgan. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Which places near Merthyr Tydfil do you cover?
As well as Merthyr Tydfil, we cover nearby Aberdare, Tredegar, Rhondda, Ebbw Vale and the rest of Mid Glamorgan.
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 Merthyr Tydfil
- Roof lantern resealing in Merthyr Tydfil
- Ridge and hip repairs in Merthyr Tydfil
- Eaves beam and gutter repairs in Merthyr Tydfil
- Flat roof junction and flashing repairs in Merthyr Tydfil
- uPVC roof lantern repairs in Merthyr Tydfil
- Opening vent and actuator repairs in Merthyr Tydfil
Roof lantern replacement near Merthyr Tydfil
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