We carry out misted glass unit replacement in Brecon and across the LD3 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.
What you might be seeing
- Fog, droplets or white bloom between the panes
- 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.
Water sitting on the edge
If the unit's edge sits in water because the eaves don't drain, the seal fails sooner.
Covering Brecon and nearby
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
From Newtown to Brecon is roughly 40 miles — all part of the Powys area we cover.
If you're just outside Brecon, we also cover Tredegar (13 miles), Merthyr Tydfil (14 miles), Ebbw Vale (14 miles).
What should you expect to pay in Brecon?
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 Wales?
In Wales, 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 (as applied in Wales), so we set out the route in writing first. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.
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 Brecon: questions
How do I get a price for misted glass unit replacement in Brecon?
Send a few photos of the lantern and the problem, with your Brecon 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 Brecon do you cover?
As well as Brecon, we cover nearby Tredegar, Merthyr Tydfil, Ebbw Vale, Aberdare and the rest of Powys.
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 Brecon
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- Solar control and self-cleaning glass upgrades in Brecon
- Condensation diagnosis and fixes in Brecon
- Aluminium roof lantern repairs in Brecon
- Urgent leak make-safe in Brecon
- Roof lantern replacement in Brecon
Misted glass unit replacement near Brecon
More about misted glass unit replacement · All roof lantern repairs in Brecon