We carry out roof lantern resealing in Falmouth and across the TR11 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
- 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.
About Falmouth and the TR11 area
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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
From Truro to Falmouth is roughly 8 miles — all part of the Cornwall area we cover.
We also cover nearby Truro (8 miles), Redruth (9 miles), Camborne (11 miles).
Guide prices for roof lantern resealing in Falmouth
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 England?
In England, 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 2010, so we set out the route in writing first. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.
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 Falmouth: questions
How do I get a price for roof lantern resealing in Falmouth?
Send a few photos of the lantern and the problem, with your Falmouth 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 Falmouth do you cover?
As well as Falmouth, we cover nearby Truro, Redruth, Camborne, Newquay and the rest of Cornwall.
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.
How long does resealing take?
Most domestic lanterns take a few hours in dry weather.
Other lantern repairs in Falmouth
- Cracked lantern glass replacement in Falmouth
- Roof lantern respraying in Falmouth
- Leak investigation and inspection in Falmouth
- Cleaning and maintenance in Falmouth
- Urgent leak make-safe in Falmouth
- Commercial roof lantern repairs in Falmouth
Roof lantern resealing near Falmouth
More about roof lantern resealing · All roof lantern repairs in Falmouth