In Derry~Londonderry, as everywhere, aluminium lanterns are strong and slim, but they still rely on gaskets, cappings and seals that wear. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Cappings lifted or rattling
- Misted units
- Corrosion at cut edges or fixings in coastal areas
What usually causes it?
Thermal movement
Aluminium moves with temperature; seals and fixings take the strain.
Finish damage
Scratches and chips expose bare metal; coastal air speeds up corrosion.
About Derry~Londonderry and the BT47 area
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 also cover nearby Strabane (14 miles), Limavady (15 miles), Portstewart (27 miles).
How much should it cost?
Guide price for aluminium roof lantern repairs: £195–£695 ex VAT (£234–£834 inc 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 Northern Ireland?
In Northern Ireland, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations (Northern Ireland) 2012, so we set out the route in writing first. Listed buildings in Northern Ireland need listed building consent from the council for alterations; check with the council's planning service 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 Derry~Londonderry: questions
How do I get a price for aluminium roof lantern repairs in Derry~Londonderry?
Send a few photos of the lantern and the problem, with your Derry~Londonderry postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Derry~Londonderry do you cover?
As well as Derry~Londonderry, we cover nearby Strabane, Limavady, Portstewart, Coleraine and the rest of County Londonderry.
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 Derry~Londonderry
- Upstand and kerb repairs in Derry~Londonderry
- Solar control and self-cleaning glass upgrades in Derry~Londonderry
- uPVC roof lantern repairs in Derry~Londonderry
- Opening vent and actuator repairs in Derry~Londonderry
- Roof lantern respraying in Derry~Londonderry
- Orangery lantern repairs in Derry~Londonderry
Aluminium roof lantern repairs near Derry~Londonderry
More about aluminium roof lantern repairs · All roof lantern repairs in Derry~Londonderry