We carry out roof lantern leak repairs in Denbigh and across the LL16 area. A roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern.
Signs you need roof lantern leak repairs
- Drips from a glazing bar or the eaves beam when it rains
- Damp patches on the ceiling a short distance from the lantern
- A leak that only appears in wind-driven rain from one direction
What usually causes it?
Failed silicone or glazing tape
UV and thermal movement break down the seal between capping, gasket and glass. Once a gap opens, water tracks along the bar and drops at the lowest point.
Blocked eaves drainage
Most lanterns collect water in a channel inside the eaves beam and let it out through weep slots. Leaves, moss and grit block the slots and the channel overflows indoors.
Roof lanterns in Denbigh
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.
From Wrexham to Denbigh is roughly 20 miles — all part of the Clwyd area we cover.
If you're just outside Denbigh, we also cover Ruthin (6 miles), Abergele (10 miles), Rhyl (10 miles).
What should you expect to pay in Denbigh?
Typical range: £195–£595 ex VAT, which is £234–£714 with 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?
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.
Roof lantern leak repairs in Denbigh: questions
How do I get a price for roof lantern leak repairs in Denbigh?
Send a few photos of the lantern and the problem, with your Denbigh postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Denbigh do you cover?
As well as Denbigh, we cover nearby Ruthin, Abergele, Rhyl, Prestatyn and the rest of Clwyd.
How much does a roof lantern leak repair cost?
Most leak repairs fall between £195 and £595 ex VAT for a standard lantern with ladder access. The fixed price is confirmed in writing before any work starts.
Will you show me what was wrong?
Yes. We photograph the failed detail and the finished repair and send them to you with the invoice.
Other lantern repairs in Denbigh
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- Roof lantern respraying in Denbigh
- Flat rooflight and skylight repairs in Denbigh
- Urgent leak make-safe in Denbigh
- Commercial roof lantern repairs in Denbigh
Roof lantern leak repairs near Denbigh
More about roof lantern leak repairs · All roof lantern repairs in Denbigh