Many uPVC roof lanterns have an aluminium core with uPVC cladding and cappings. Send photos from Caernarfon (LL55) and we'll tell you which it is — with the price agreed in writing before any work.
Signs you need uPVC roof lantern repairs
- Yellowed or brittle end caps
- Rattling or whistling in wind
- Leaks at the ridge or eaves
Common causes we find
UV ageing
uPVC components become brittle and crack after years of sun.
Blocked drainage
As with all lanterns, blocked eaves drainage causes overflow.
About Caernarfon and the LL55 area
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.
If you're just outside Caernarfon, we also cover Llangefni (8 miles), Bangor, Gwynedd (8 miles), Porthmadog (16 miles).
How much should it cost?
Guide price for uPVC roof lantern repairs: £175–£595 ex VAT (£210–£714 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 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.
uPVC roof lantern repairs in Caernarfon: questions
Do you cover Caernarfon?
Yes. We cover Caernarfon, including the LL55 postcode area, as part of Gwynedd. 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.
How do I get a price for uPVC roof lantern repairs in Caernarfon?
Send a few photos of the lantern and the problem, with your Caernarfon postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
What does a uPVC lantern repair cost?
Usually £175–£595 ex VAT per lantern, confirmed in writing before work starts.
Can you change my uPVC lantern's colour?
Yes, with a respray suitable for uPVC.
Other lantern repairs in Caernarfon
- Flat roof junction and flashing repairs in Caernarfon
- Misted glass unit replacement in Caernarfon
- Slipped glass panel repairs in Caernarfon
- Condensation diagnosis and fixes in Caernarfon
- Timber roof lantern repairs in Caernarfon
- Commercial roof lantern repairs in Caernarfon
uPVC roof lantern repairs near Caernarfon
More about uPVC roof lantern repairs · All roof lantern repairs in Caernarfon