In Rhyl, as everywhere, resealing is the planned, whole-lantern version of a leak repair: we cut out the old, failed sealant, clean every joint back to a sound surface and reseal the cappings, ridge and eaves with materials that suit the frame. Send photos and we'll tell you what we think has failed.
What you might be seeing
- Black mould or dirt lines trapped in old silicone
- Several small leaks rather than one obvious one
- A lantern that is 8–15 years old and has never been maintained
What usually causes it?
Wrong product used
General-purpose or acetoxy silicone can fail early on some frames and coatings. Glazing joints need a low-modulus, compatible sealant.
Patch over patch
Fresh sealant run over old, dirty sealant rarely bonds. It looks fixed for a season and then lets go.
Roof lanterns in Rhyl
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.
From Wrexham to Rhyl is roughly 28 miles — all part of the Clwyd area we cover.
Close by, we also cover Prestatyn (4 miles), Abergele (4 miles), Colwyn Bay (10 miles).
How much should it cost?
Typical range: £245–£495 ex VAT, which is £294–£594 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 resealing in Rhyl: questions
How do I get a price for roof lantern resealing in Rhyl?
Send a few photos of the lantern and the problem, with your Rhyl 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 Rhyl do you cover?
As well as Rhyl, we cover nearby Prestatyn, Abergele, Colwyn Bay, Denbigh and the rest of Clwyd.
How much does it cost to reseal a roof lantern?
A standard-size lantern on a single-storey extension is usually £245–£495 ex VAT. Larger lanterns, difficult access or gasket replacement add to that, and you get the fixed price in writing first.
Can you match the colour of my frame?
We use sealants in common frame colours such as anthracite grey, black and white, and match as closely as the range allows.
Other lantern repairs in Rhyl
- Upstand and kerb repairs in Rhyl
- Slipped glass panel repairs in Rhyl
- Condensation diagnosis and fixes in Rhyl
- Opening vent and actuator repairs in Rhyl
- Leak investigation and inspection in Rhyl
- Roof lantern replacement in Rhyl
Roof lantern resealing near Rhyl
More about roof lantern resealing · All roof lantern repairs in Rhyl