Roof lantern resealing in County Antrim

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. We carry out roof lantern resealing across County Antrim, with a guide price from your photos and a fixed price in writing before any work starts.

Sealant being applied along an anthracite aluminium roof lantern glazing bar

Signs you need roof lantern resealing

Cracked, split or shrunken sealant along the bars
Black mould or dirt lines trapped in old silicone
A lantern that is 8–15 years old and has never been maintained

What usually causes it?

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 County Antrim

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.

Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.

What should you expect to pay for roof lantern resealing in County Antrim?

Guide price, per lantern£245–£495 ex VAT£294–£594 inc VAT

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 Northern Ireland?

In Northern Ireland, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations (Northern Ireland) 2012, so we set out the route in writing first. 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 County Antrim: questions

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.

Which towns in County Antrim do you cover?

All of County Antrim, including Belfast, Lisburn, Newtownabbey, Carrickfergus, Ballymena, Antrim. Rural and remote addresses are covered by arrangement.

How do I get a price for roof lantern resealing in County Antrim?

Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.

Other repairs in County Antrim

Nearby areas

More about roof lantern resealing · All roof lantern repairs in County Antrim