Commercial lanterns and atrium rooflights fail in the same ways as domestic ones, but access, safety and disruption matter more. Send photos from Llanelli (SA15) and we'll tell you which it is — with the price agreed in writing before any work.

Is it time for commercial roof lantern repairs?
- Multiple lanterns on one roof needing a programme
- Insurance or landlord requirement for a report
- Managed buildings with planned maintenance needs
Common causes we find
Scale
More lanterns, more joints, more drainage to block.
Deferred maintenance
Leaks appear when maintenance has slipped.
Covering Llanelli 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.
Llanelli is around 13 miles from Carmarthen, and both are within our Dyfed coverage.
If you're just outside Llanelli, we also cover Gorseinon (5 miles), Swansea (10 miles), Ammanford (11 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?
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.
Commercial roof lantern repairs in Llanelli: questions
Do you cover Llanelli?
Yes. We cover Llanelli, including the SA15 postcode area, as part of Dyfed. 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.
Can you repair a lantern someone else installed in Llanelli?
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.
What do commercial lantern repairs cost?
From about £495 ex VAT per lantern; programmes, access equipment and out-of-hours work are priced on survey and confirmed in writing.
Do you provide RAMS?
Yes, before work starts.
Other lantern repairs in Llanelli
- Ridge and hip repairs in Llanelli
- Flat roof junction and flashing repairs in Llanelli
- Solar control and self-cleaning glass upgrades in Llanelli
- Timber roof lantern repairs in Llanelli
- Roof lantern respraying in Llanelli
- Cleaning and maintenance in Llanelli
Commercial roof lantern repairs near Llanelli
More about commercial roof lantern repairs · All roof lantern repairs in Llanelli