We carry out timber roof lantern repairs in Caernarfon and across the LL55 area. Timber roof lanterns are beautiful and repairable, but they need sound paint, sound beads and dry timber.
What you might be seeing
- Dark staining or black lines along joints
- Putty or beads cracking and lifting
- Leaks at bar joints
Why it happens
Water trapped by beads
Glazing beads and putty can trap water against the timber if their seals fail.
No maintenance
Timber needs redecorating on a cycle; skipped cycles turn small repairs into big ones.
Covering Caernarfon and nearby
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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
From Bangor, Gwynedd to Caernarfon is roughly 8 miles — all part of the Gwynedd area we cover.
We also cover nearby Llangefni (8 miles), Bangor, Gwynedd (8 miles), Porthmadog (16 miles).
How much should it cost?
Most timber roof lantern repairs jobs come in between £395 and £1,995 ex VAT (£474–£2,394 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.
Timber roof lantern repairs in Caernarfon: questions
Do you need to visit to price timber roof lantern repairs?
Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.
Can you repair a lantern someone else installed in Caernarfon?
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.
How much do timber lantern repairs cost?
From about £395 ex VAT for localised repairs up to around £1,995 for extensive restoration of a standard lantern, confirmed in writing before work starts.
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.
Other lantern repairs in Caernarfon
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- Cleaning and maintenance in Caernarfon
Timber roof lantern repairs near Caernarfon
More about timber roof lantern repairs · All roof lantern repairs in Caernarfon