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 Dundee and Angus, with a guide price from your photos and a fixed price in writing before any work starts.
Signs you need roof lantern resealing
- Black mould or dirt lines trapped in old silicone
- Sealant applied over sealant from previous patch repairs
- 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 Dundee and Angus
Freeze-thaw cycles open up tired sealant and gaskets faster than mild weather does. A spring check after a hard winter catches most problems before they leak.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
What should you expect to pay for roof lantern resealing in Dundee and Angus?
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 Scotland?
In Scotland, 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 (Scotland) Regulations 2004, so we set out the route in writing first. Listed buildings in Scotland need listed building consent from the planning authority for alterations, with Historic Environment Scotland guidance; check 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 Dundee and Angus: questions
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.
Which towns in Dundee and Angus do you cover?
All of Dundee and Angus, including Dundee, Arbroath, Brechin, Carnoustie, Forfar, Montrose. Rural and remote addresses are covered by arrangement.
How do I get a price for roof lantern resealing in Dundee and Angus?
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 Dundee and Angus
- Flat roof junction and flashing repairs in Dundee and Angus
- Slipped glass panel repairs in Dundee and Angus
- Aluminium roof lantern repairs in Dundee and Angus
- Flat rooflight and skylight repairs in Dundee and Angus
- Cleaning and maintenance in Dundee and Angus
- Commercial roof lantern repairs in Dundee and Angus
Nearby areas
- Roof lantern resealing in Fife
- Roof lantern resealing in Perth and Kinross
- Roof lantern resealing in Edinburgh and the Lothians
- Roof lantern resealing in Stirling and Falkirk
- Roof lantern resealing in Aberdeen and Aberdeenshire
More about roof lantern resealing · All roof lantern repairs in Dundee and Angus