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. We carry out misted glass unit replacement across Northamptonshire, with a guide price from your photos and a fixed price in writing before any work starts.
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
What usually causes it?
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.
Roof lanterns in Northamptonshire
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
What should you expect to pay for misted glass unit replacement in Northamptonshire?
Most misted glass unit replacement jobs come in between £245 and £595 ex VAT (£294–£714 including 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 Northamptonshire: questions
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.
Which towns in Northamptonshire do you cover?
All of Northamptonshire, including Northampton, Corby, Kettering, Wellingborough, Rushden, Daventry. Rural and remote addresses are covered by arrangement.
How do I get a price for misted glass unit replacement in Northamptonshire?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in Northamptonshire
- Roof lantern leak repairs in Northamptonshire
- Eaves beam and gutter repairs in Northamptonshire
- Cracked lantern glass replacement in Northamptonshire
- Condensation diagnosis and fixes in Northamptonshire
- Leak investigation and inspection in Northamptonshire
- Commercial roof lantern repairs in Northamptonshire
Nearby areas
- Misted glass unit replacement in Rutland
- Misted glass unit replacement in Leicestershire
- Misted glass unit replacement in Bedfordshire
- Misted glass unit replacement in Warwickshire
- Misted glass unit replacement in Cambridgeshire
More about misted glass unit replacement · All roof lantern repairs in Northamptonshire