We carry out misted glass unit replacement in Whitehaven and across the CA28 area. 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.

Signs you need misted glass unit replacement
- One pane looks hazier than the others
- Misting that comes and goes with the weather
- Water marks or tide lines inside the unit
Common causes we find
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 Whitehaven and the CA28 area
Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.
From Carlisle to Whitehaven is roughly 35 miles — all part of the Cumbria area we cover.
We also cover nearby Workington (7 miles), Barrow-in-Furness (34 miles), Penrith (34 miles).
Guide prices for misted glass unit replacement in Whitehaven
Guide price for misted glass unit replacement: £245–£595 ex VAT (£294–£714 inc 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?
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.
Misted glass unit replacement in Whitehaven: questions
How do I get a price for misted glass unit replacement in Whitehaven?
Send a few photos of the lantern and the problem, with your Whitehaven 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 Whitehaven do you cover?
As well as Whitehaven, we cover nearby Workington, Barrow-in-Furness, Penrith, Carlisle and the rest of Cumbria.
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.
Will the new pane match the others?
We match tint and coatings as closely as possible; a new unit can look very slightly clearer than older neighbours.
Other lantern repairs in Whitehaven
- Roof lantern resealing in Whitehaven
- Eaves beam and gutter repairs in Whitehaven
- Upstand and kerb repairs in Whitehaven
- Flat roof junction and flashing repairs in Whitehaven
- uPVC roof lantern repairs in Whitehaven
- Commercial roof lantern repairs in Whitehaven
Misted glass unit replacement near Whitehaven
More about misted glass unit replacement · All roof lantern repairs in Whitehaven