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England · Dorset

Misted glass unit replacement in Dorset

Dealing with a misted pane somewhere in Dorset? We measure, order and fit replacement sealed units for misted panes, keeping the rest of the lantern. Our coverage includes Bournemouth, Poole, Weymouth and the villages around them.

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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. We carry out misted glass unit replacement across Dorset, with a guide price from your photos and a fixed price in writing before any work starts.

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

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 Dorset

Drier, sunnier parts of the UK are kinder to seals than the wet west, but strong sun ages sealant, gaskets and plastic end caps, and south- or west-facing lanterns can make rooms very warm. Solar control glass and an opening vent help.

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.

What should you expect to pay for misted glass unit replacement in Dorset?

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

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?

  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 Dorset: 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.

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.

Which towns in Dorset do you cover?

All of Dorset, including Bournemouth, Poole, Weymouth, Christchurch. Rural and remote addresses are covered by arrangement.

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

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.

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