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 from Ruthin (LL15) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need roof lantern resealing
- Black mould or dirt lines trapped in old silicone
- Several small leaks rather than one obvious one
- Sealant applied over sealant from previous patch repairs
Common causes we find
Sealant past its life
Exposed sealant on a roof takes UV, frost and constant expansion and contraction. It hardens, loses grip and pulls away from the glass.
Wrong product used
General-purpose or acetoxy silicone can fail early on some frames and coatings. Glazing joints need a low-modulus, compatible sealant.
Roof lanterns in Ruthin
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 Ruthin is roughly 14 miles — all part of the Clwyd area we cover.
Neighbouring places we cover include Denbigh (6 miles), Mold (8 miles), Buckley (10 miles).
What should you expect to pay in Ruthin?
Guide price for roof lantern resealing: £245–£495 ex VAT (£294–£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.
Roof lantern resealing in Ruthin: questions
Do you cover Ruthin?
Yes. We cover Ruthin, including the LL15 postcode area, as part of Clwyd. 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.
How do I get a price for roof lantern resealing in Ruthin?
Send a few photos of the lantern and the problem, with your Ruthin postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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.
How long does resealing take?
Most domestic lanterns take a few hours in dry weather.
Other lantern repairs in Ruthin
- Eaves beam and gutter repairs in Ruthin
- Cracked lantern glass replacement in Ruthin
- Timber roof lantern repairs in Ruthin
- Roof lantern respraying in Ruthin
- Cleaning and maintenance in Ruthin
- Commercial roof lantern repairs in Ruthin
Roof lantern resealing near Ruthin
More about roof lantern resealing · All roof lantern repairs in Ruthin