In Uxbridge, as everywhere, if a roof lantern pane looks cloudy or wet between the two layers of glass, the sealed unit has failed and moisture has got inside. Send photos and we'll tell you what we think has failed.

Signs you need misted glass unit replacement
- Fog, droplets or white bloom between the panes
- Misting that comes and goes with the weather
- Water marks or tide lines inside the unit
Why it happens
Edge seal failure
Every sealed unit has an edge seal and desiccant. Once the seal fails, humid air gets in and the desiccant saturates.
Movement and age
Thermal movement and age wear the seal; units at the bottom of the lantern often go first.
About Uxbridge and the UB8 area
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.
London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.
We cover Uxbridge as part of Greater London, about 15 miles from Westminster.
If you're just outside Uxbridge, we also cover Ruislip (3 miles), Hayes (3 miles), Gerrards Cross (4 miles).
What should you expect to pay in Uxbridge?
Typical range: £245–£595 ex VAT, which is £294–£714 with VAT, per glass unit. 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.
Misted glass unit replacement in Uxbridge: questions
How do I get a price for misted glass unit replacement in Uxbridge?
Send a few photos of the lantern and the problem, with your Uxbridge 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 Uxbridge do you cover?
As well as Uxbridge, we cover nearby Ruislip, Hayes, Gerrards Cross, Northolt and the rest of Greater London.
How much does a misted lantern unit cost to replace?
Usually £245–£595 ex VAT per unit depending on size, glass spec and access, confirmed in writing before work starts.
How long does a replacement unit take?
Units are made to measure, so there's a lead time between measuring and fitting. Fitting itself is usually a short visit.
Other lantern repairs in Uxbridge
- Ridge and hip repairs in Uxbridge
- Eaves beam and gutter repairs in Uxbridge
- Cracked lantern glass replacement in Uxbridge
- Slipped glass panel repairs in Uxbridge
- Flat rooflight and skylight repairs in Uxbridge
- Cleaning and maintenance in Uxbridge
Misted glass unit replacement near Uxbridge
More about misted glass unit replacement · All roof lantern repairs in Uxbridge