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Greater London · CR8

Misted glass unit replacement in Purley

For misted glass unit replacement in Purley, the job is simple to describe: we measure, order and fit replacement sealed units for misted panes, keeping the rest of the lantern. Photos first, a guide price back, then a written fixed price.

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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 from Purley (CR8) and we'll tell you which it is — with the price agreed in writing before any work.

Roof lantern seen from inside with one misted double glazed pane between clear panes

What you might be seeing

  • 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

Water sitting on the edge

If the unit's edge sits in water because the eaves don't drain, the seal fails sooner.

Movement and age

Thermal movement and age wear the seal; units at the bottom of the lantern often go first.

About Purley and the CR8 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 Purley as part of Greater London, about 11 miles from Westminster.

Neighbouring places we cover include Coulsdon (2 miles), South Croydon (2 miles), Wallington (3 miles).

What should you expect to pay in Purley?

Guide price, per glass unit£245–£595 ex VAT£294–£714 inc VAT

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?

Most lantern repairs in England need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 apply and we confirm how the work will be signed off before we start. 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?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Misted glass unit replacement in Purley: questions

Do you need to visit to price misted glass unit replacement?

Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.

Can you repair a lantern someone else installed in Purley?

Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.

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.

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Misted glass unit replacement near Purley

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