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Cornwall · PL25

Misted glass unit replacement in St Austell

If you're in St Austell and dealing with a misted pane, we can help. We measure, order and fit replacement sealed units for misted panes, keeping the rest of the lantern, and confirm the fixed price in writing before we start.

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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 St Austell (PL25) 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

Is it time for misted glass unit replacement?

  • Fog, droplets or white bloom between the panes
  • One pane looks hazier than the others
  • 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.

Roof lanterns in St Austell

Wind-driven rain is the real test of a roof lantern, and the wetter west sees plenty of it. Leaks that appear only in a storm from one direction usually point to the cappings or eaves on that face — a useful clue when you send us photos.

Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.

From Truro to St Austell is roughly 13 miles — all part of the Cornwall area we cover.

We also cover nearby Bodmin (9 miles), Truro (13 miles), Newquay (14 miles).

What should you expect to pay in St Austell?

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

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?

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 St Austell: questions

How do I get a price for misted glass unit replacement in St Austell?

Send a few photos of the lantern and the problem, with your St Austell postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.

Can you repair a lantern someone else installed in St Austell?

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.

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 St Austell

Misted glass unit replacement near St Austell

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