Cracked lantern glass replacement in Greater London

A cracked pane in a roof lantern needs prompt attention because the glass is overhead. We carry out cracked lantern glass replacement across Greater London, with a guide price from your photos and a fixed price in writing before any work starts.

Two glaziers lifting a replacement glass unit onto a flat roof glazing frame with suction lifters

Signs you need cracked lantern glass replacement

A starburst from an impact point
A crack running from an edge (often thermal stress)
Broken glass inside the room — keep everyone out of the area

What usually causes it?

Thermal stress

Uneven heating across a pane, edge damage or partial shading can crack glass from the edge.

Spontaneous breakage

Toughened glass can occasionally break without warning, which is why laminated inner panes are recommended overhead.

Roof lanterns in Greater London

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.

Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.

What should you expect to pay for cracked lantern glass replacement in Greater London?

Guide price, per glass unit£295–£795 ex VAT£354–£954 inc VAT

Most cracked lantern glass replacement jobs come in between £295 and £795 ex VAT (£354–£954 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?

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?

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.

Cracked lantern glass replacement in Greater London: questions

What does replacing cracked lantern glass cost?

Usually £295–£795 ex VAT per unit depending on size, spec and access, confirmed in writing before work starts.

Is it covered by home insurance?

Accidental damage often is; check your policy. We can provide a written quote and photos for your insurer.

Which towns in Greater London do you cover?

All of Greater London, including Westminster, Islington, Bexley, Barking, Archway, Sutton. Rural and remote addresses are covered by arrangement.

How do I get a price for cracked lantern glass replacement in Greater London?

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 Greater London

Nearby areas

More about cracked lantern glass replacement · All roof lantern repairs in Greater London