We carry out roof lantern resealing in Pontypool and across the NP4 area. 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.
Is it time for roof lantern resealing?
- Cracked, split or shrunken sealant along the bars
- Black mould or dirt lines trapped in old silicone
- Sealant applied over sealant from previous patch repairs
Why it happens
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.
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 Pontypool
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.
We cover Pontypool as part of Gwent, about 8 miles from Newport, Gwent.
We also cover nearby Cwmbran (3 miles), Risca (7 miles), Blackwood (7 miles).
Guide prices for roof lantern resealing in Pontypool
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 Pontypool: questions
How do I get a price for roof lantern resealing in Pontypool?
Send a few photos of the lantern and the problem, with your Pontypool 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 Pontypool do you cover?
As well as Pontypool, we cover nearby Cwmbran, Risca, Blackwood, Newport, Gwent and the rest of Gwent.
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 Pontypool
- Misted glass unit replacement in Pontypool
- Cracked lantern glass replacement in Pontypool
- Roof lantern respraying in Pontypool
- Cleaning and maintenance in Pontypool
- Roof lantern replacement in Pontypool
- Commercial roof lantern repairs in Pontypool
Roof lantern resealing near Pontypool
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