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 from Crowthorne (RG45) and we'll tell you which it is — with the price agreed in writing before any work.
Is it time for roof lantern resealing?
- Black mould or dirt lines trapped in old silicone
- Several small leaks rather than one obvious one
- Sealant applied over sealant from previous patch repairs
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.
Patch over patch
Fresh sealant run over old, dirty sealant rarely bonds. It looks fixed for a season and then lets go.
Roof lanterns in Crowthorne
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
Crowthorne is around 10 miles from Reading, and both are within our Berkshire coverage.
We also cover nearby Sandhurst (2 miles), Yateley (2 miles), Camberley (3 miles).
Guide prices for roof lantern resealing in Crowthorne
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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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 Crowthorne: questions
Do you cover Crowthorne?
Yes. We cover Crowthorne, including the RG45 postcode area, as part of Berkshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
How do I get a price for roof lantern resealing in Crowthorne?
Send a few photos of the lantern and the problem, with your Crowthorne postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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 Crowthorne
- Roof lantern leak repairs in Crowthorne
- Flat roof junction and flashing repairs in Crowthorne
- Aluminium roof lantern repairs in Crowthorne
- Urgent leak make-safe in Crowthorne
- Roof lantern replacement in Crowthorne
- Orangery lantern repairs in Crowthorne
Roof lantern resealing near Crowthorne
More about roof lantern resealing · All roof lantern repairs in Crowthorne