Aluminium lanterns are strong and slim, but they still rely on gaskets, cappings and seals that wear. Send photos from Cowbridge (CF71) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Chalky or chipped powder coat
- Misted units
- Corrosion at cut edges or fixings in coastal areas
Why it happens
Worn gaskets
Gaskets do the weatherproofing; they harden and shrink with age.
Thermal movement
Aluminium moves with temperature; seals and fixings take the strain.
Covering Cowbridge and nearby
Wind-driven rain is the real test of a roof lantern, and the wetter west sees plenty of it. Leaks that appear only in a storm from one direction usually point to the cappings or eaves on that face — a useful clue when you send us photos.
We cover Cowbridge as part of South Glamorgan, about 11 miles from Cardiff.
Neighbouring places we cover include Llantwit Major (4 miles), Bridgend (7 miles), Barry (8 miles).
Guide prices for aluminium roof lantern repairs in Cowbridge
Most aluminium roof lantern repairs jobs come in between £195 and £695 ex VAT (£234–£834 including VAT), per lantern. 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?
Most lantern repairs in Wales need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 (as applied in Wales) apply and we confirm how the work will be signed off before we start. 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.
Aluminium roof lantern repairs in Cowbridge: questions
Do you cover Cowbridge?
Yes. We cover Cowbridge, including the CF71 postcode area, as part of South 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 Cowbridge do you cover?
As well as Cowbridge, we cover nearby Llantwit Major, Bridgend, Barry, Pontypridd and the rest of South Glamorgan.
What do aluminium lantern repairs cost?
Most component repairs are £195–£695 ex VAT per lantern, confirmed in writing before work starts.
Can you repaint an aluminium lantern?
Yes — see roof lantern respraying for on-site spray finishes.
Other lantern repairs in Cowbridge
- Eaves beam and gutter repairs in Cowbridge
- Flat roof junction and flashing repairs in Cowbridge
- Misted glass unit replacement in Cowbridge
- Cracked lantern glass replacement in Cowbridge
- Opening vent and actuator repairs in Cowbridge
- Cleaning and maintenance in Cowbridge
Aluminium roof lantern repairs near Cowbridge
More about aluminium roof lantern repairs · All roof lantern repairs in Cowbridge