We carry out leak investigation and inspection in Llanelli and across the SA15 area. Some leaks are obvious; many aren't.

What you might be seeing
- Previous repairs haven't stopped the leak
- The leak moves around or is intermittent
- You're not sure if it's a leak or condensation
Why it happens
Hidden water paths
Water can travel along bars, decks and linings before it shows.
Not the lantern
Sometimes the source is the flat roof, a parapet, a gutter or a wall above.
Roof lanterns in Llanelli
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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
We cover Llanelli as part of Dyfed, about 13 miles from Carmarthen.
Close by, we also cover Gorseinon (5 miles), Swansea (10 miles), Ammanford (11 miles).
Guide prices for leak investigation and inspection in Llanelli
Typical range: £145–£295 ex VAT, which is £174–£354 with VAT, per visit. 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. 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.
Leak investigation and inspection in Llanelli: questions
Do you need to visit to price leak investigation and inspection?
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.
Which places near Llanelli do you cover?
As well as Llanelli, we cover nearby Gorseinon, Swansea, Ammanford, Carmarthen and the rest of Dyfed.
Is the visit cost deducted from the repair?
Ask when you book — we'll confirm in writing how the visit is charged if you go ahead with the repair.
Do you provide a report?
Yes, with photos and findings, which is useful for landlords, insurers and disputes with installers.
Other lantern repairs in Llanelli
- Misted glass unit replacement in Llanelli
- Condensation diagnosis and fixes in Llanelli
- Aluminium roof lantern repairs in Llanelli
- Cleaning and maintenance in Llanelli
- Roof lantern replacement in Llanelli
- Commercial roof lantern repairs in Llanelli
Leak investigation and inspection near Llanelli
More about leak investigation and inspection · All roof lantern repairs in Llanelli