In Derry~Londonderry, as everywhere, timber roof lanterns are beautiful and repairable, but they need sound paint, sound beads and dry timber. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Flaking or blistered paint on bars or eaves
- Soft timber when pressed
- Leaks at bar joints
Why it happens
Paint failure
Once the paint film breaks, water gets into the end grain and joints.
No maintenance
Timber needs redecorating on a cycle; skipped cycles turn small repairs into big ones.
Roof lanterns in Derry~Londonderry
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.
Neighbouring places we cover include Strabane (14 miles), Limavady (15 miles), Portstewart (27 miles).
How much should it cost?
Typical range: £395–£1,995 ex VAT, which is £474–£2,394 with 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?
Most lantern repairs in Northern Ireland need no approval at all. Where a job turns into a replacement, the Building Regulations (Northern Ireland) 2012 apply and we confirm how the work will be signed off before we start. 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.
Timber roof lantern repairs in Derry~Londonderry: questions
Can you repair a lantern someone else installed in Derry~Londonderry?
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.
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.
Do you work on listed buildings?
Yes. Listed building consent may be needed for changes; like-for-like repair is generally treated differently from alteration, but check with your council's conservation officer before work.
How often does a timber lantern need painting?
It depends on exposure and paint system; many need redecorating every five to eight years.
Other lantern repairs in Derry~Londonderry
- Upstand and kerb repairs in Derry~Londonderry
- Flat roof junction and flashing repairs in Derry~Londonderry
- Condensation diagnosis and fixes in Derry~Londonderry
- Opening vent and actuator repairs in Derry~Londonderry
- Cleaning and maintenance in Derry~Londonderry
- Urgent leak make-safe in Derry~Londonderry
Timber roof lantern repairs near Derry~Londonderry
More about timber roof lantern repairs · All roof lantern repairs in Derry~Londonderry