In Luton, as everywhere, 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. Send photos and we'll tell you what we think has failed.

What you might be seeing
- Cracked, split or shrunken sealant along the bars
- Black mould or dirt lines trapped in old silicone
- Several small leaks rather than one obvious one
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.
Covering Luton and nearby
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
Luton is around 18 miles from Bedford, and both are within our Bedfordshire coverage.
Neighbouring places we cover include Dunstable (5 miles), Harpenden (5 miles), Hitchin (7 miles).
How much should it cost?
Most roof lantern resealing jobs come in between £245 and £495 ex VAT (£294–£594 including 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 Luton: questions
How do I get a price for roof lantern resealing in Luton?
Send a few photos of the lantern and the problem, with your Luton 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 Luton do you cover?
As well as Luton, we cover nearby Dunstable, Harpenden, Hitchin, Hemel Hempstead and the rest of Bedfordshire.
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.
Other lantern repairs in Luton
- Glazing bar and capping repairs in Luton
- Ridge and hip repairs in Luton
- Eaves beam and gutter repairs in Luton
- Cracked lantern glass replacement in Luton
- Slipped glass panel repairs in Luton
- Solar control and self-cleaning glass upgrades in Luton
Roof lantern resealing near Luton
More about roof lantern resealing · All roof lantern repairs in Luton