We carry out roof lantern leak repairs in Mold and across the CH7 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.

Is it time for roof lantern leak repairs?
- Drips from a glazing bar or the eaves beam when it rains
- Water running down the inside face of the glass
- A leak that only appears in wind-driven rain from one direction
Why it happens
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.
The kerb or roof junction
If the flat roof membrane isn't dressed high enough up the kerb, or the kerb has no fall, water sits against the joint and finds its way in under the lantern.
Roof lanterns in Mold
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.
Mold is around 10 miles from Wrexham, and both are within our Clwyd coverage.
We also cover nearby Buckley (2 miles), Deeside (5 miles), Flint (5 miles).
What should you expect to pay in Mold?
Guide price for roof lantern leak repairs: £195–£595 ex VAT (£234–£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.
Roof lantern leak repairs in Mold: questions
How do I get a price for roof lantern leak repairs in Mold?
Send a few photos of the lantern and the problem, with your Mold 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 Mold do you cover?
As well as Mold, we cover nearby Buckley, Deeside, Flint, Ruthin 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.
Can you fix the leak in the rain?
We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.
Other lantern repairs in Mold
- Glazing bar and capping repairs in Mold
- Ridge and hip repairs in Mold
- Flat roof junction and flashing repairs in Mold
- Aluminium roof lantern repairs in Mold
- Urgent leak make-safe in Mold
- Commercial roof lantern repairs in Mold
Roof lantern leak repairs near Mold
More about roof lantern leak repairs · All roof lantern repairs in Mold