We carry out roof lantern resealing in Limavady and across the BT49 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.
Signs you need roof lantern resealing
- 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
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.
Wrong product used
General-purpose or acetoxy silicone can fail early on some frames and coatings. Glazing joints need a low-modulus, compatible sealant.
Covering Limavady and nearby
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 Derry~Londonderry to Limavady is roughly 15 miles — all part of the County Londonderry area we cover.
We also cover nearby Coleraine (13 miles), Portstewart (13 miles), Derry~Londonderry (15 miles).
Guide prices for roof lantern resealing in Limavady
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 Northern Ireland?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Northern Ireland. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations (Northern Ireland) 2012; we confirm in writing which route applies before any replacement. Listed buildings in Northern Ireland need listed building consent from the council for alterations; check with the council's planning service 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 Limavady: questions
How do I get a price for roof lantern resealing in Limavady?
Send a few photos of the lantern and the problem, with your Limavady 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 Limavady do you cover?
As well as Limavady, we cover nearby Coleraine, Portstewart, Derry~Londonderry, Ballymoney and the rest of County Londonderry.
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 Limavady
- Flat roof junction and flashing repairs in Limavady
- Condensation diagnosis and fixes in Limavady
- Aluminium roof lantern repairs in Limavady
- Leak investigation and inspection in Limavady
- Roof lantern replacement in Limavady
- Commercial roof lantern repairs in Limavady
Roof lantern resealing near Limavady
More about roof lantern resealing · All roof lantern repairs in Limavady