In Bangor, Gwynedd, as everywhere, commercial lanterns and atrium rooflights fail in the same ways as domestic ones, but access, safety and disruption matter more. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Leaks into trading or office areas
- Insurance or landlord requirement for a report
- Managed buildings with planned maintenance needs
Why it happens
Scale
More lanterns, more joints, more drainage to block.
Deferred maintenance
Leaks appear when maintenance has slipped.
Covering Bangor, Gwynedd 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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
Neighbouring places we cover include Llangefni (8 miles), Caernarfon (8 miles), Llandudno (14 miles).
How much should it cost?
Guide price for commercial roof lantern repairs: £495–£2,995 ex VAT (£594–£3,594 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?
In Wales, 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 2010 (as applied in Wales), so we set out the route in writing first. 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.
Commercial roof lantern repairs in Bangor, Gwynedd: questions
Do you cover Bangor, Gwynedd?
Yes. We cover Bangor, Gwynedd, including the LL57 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 commercial roof lantern repairs in Bangor, Gwynedd?
Send a few photos of the lantern and the problem, with your Bangor, Gwynedd postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Do you provide RAMS?
Yes, before work starts.
Can you invoice a managing agent?
Yes — tell us who the client and invoice contact are when you enquire.
Other lantern repairs in Bangor, Gwynedd
- Ridge and hip repairs in Bangor, Gwynedd
- Eaves beam and gutter repairs in Bangor, Gwynedd
- Flat roof junction and flashing repairs in Bangor, Gwynedd
- Solar control and self-cleaning glass upgrades in Bangor, Gwynedd
- Flat rooflight and skylight repairs in Bangor, Gwynedd
- Leak investigation and inspection in Bangor, Gwynedd
Commercial roof lantern repairs near Bangor, Gwynedd
More about commercial roof lantern repairs · All roof lantern repairs in Bangor, Gwynedd