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 Leatherhead (KT22) and we'll tell you which it is — with the price agreed in writing before any work.
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
Why it happens
Wrong product used
General-purpose or acetoxy silicone can fail early on some frames and coatings. Glazing joints need a low-modulus, compatible sealant.
Patch over patch
Fresh sealant run over old, dirty sealant rarely bonds. It looks fixed for a season and then lets go.
About Leatherhead and the KT22 area
Drier, sunnier parts of the UK are kinder to seals than the wet west, but strong sun ages sealant, gaskets and plastic end caps, and south- or west-facing lanterns can make rooms very warm. Solar control glass and an opening vent help.
Leatherhead is around 11 miles from Guildford, and both are within our Surrey coverage.
Close by, we also cover Epsom (4 miles), Ewell (5 miles), Esher (5 miles).
How much should it cost?
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 Leatherhead: questions
Do you cover Leatherhead?
Yes. We cover Leatherhead, including the KT22 postcode area, as part of Surrey. 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.
Which places near Leatherhead do you cover?
As well as Leatherhead, we cover nearby Epsom, Ewell, Esher, Banstead and the rest of Surrey.
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 Leatherhead
- Eaves beam and gutter repairs in Leatherhead
- Solar control and self-cleaning glass upgrades in Leatherhead
- Opening vent and actuator repairs in Leatherhead
- Roof lantern respraying in Leatherhead
- Leak investigation and inspection in Leatherhead
- Roof lantern replacement in Leatherhead
Roof lantern resealing near Leatherhead
More about roof lantern resealing · All roof lantern repairs in Leatherhead