We carry out roof lantern resealing in Chippenham and across the SN15 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.
What you might be seeing
- 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
Why it happens
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 Chippenham and the SN15 area
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.
From Swindon to Chippenham is roughly 16 miles — all part of the Wiltshire area we cover.
Close by, we also cover Trowbridge (10 miles), Bath (12 miles), Yate (14 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 Chippenham: questions
Do you cover Chippenham?
Yes. We cover Chippenham, including the SN15 postcode area, as part of Wiltshire. 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 Chippenham?
Send a few photos of the lantern and the problem, with your Chippenham 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 Chippenham
- Glazing bar and capping repairs in Chippenham
- Ridge and hip repairs in Chippenham
- Eaves beam and gutter repairs in Chippenham
- Timber roof lantern repairs in Chippenham
- Orangery lantern repairs in Chippenham
- Commercial roof lantern repairs in Chippenham
Roof lantern resealing near Chippenham
More about roof lantern resealing · All roof lantern repairs in Chippenham