In Waterlooville, 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
- Black mould or dirt lines trapped in old silicone
- Several small leaks rather than one obvious one
- A lantern that is 8–15 years old and has never been maintained
Common causes we find
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.
Roof lanterns in Waterlooville
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
We cover Waterlooville as part of Hampshire, about 16 miles from Southampton.
If you're just outside Waterlooville, we also cover Havant (3 miles), Portsmouth (6 miles), Fareham (7 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 Waterlooville: questions
How do I get a price for roof lantern resealing in Waterlooville?
Send a few photos of the lantern and the problem, with your Waterlooville 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 Waterlooville do you cover?
As well as Waterlooville, we cover nearby Havant, Portsmouth, Fareham, Gosport and the rest of Hampshire.
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 Waterlooville
- Roof lantern leak repairs in Waterlooville
- Ridge and hip repairs in Waterlooville
- Solar control and self-cleaning glass upgrades in Waterlooville
- uPVC roof lantern repairs in Waterlooville
- Roof lantern respraying in Waterlooville
- Orangery lantern repairs in Waterlooville
Roof lantern resealing near Waterlooville
More about roof lantern resealing · All roof lantern repairs in Waterlooville