A cracked pane in a roof lantern needs prompt attention because the glass is overhead. Send photos from Dover (CT16) and we'll tell you which it is — with the price agreed in writing before any work.

Is it time for 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
Common causes we find
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 Dover
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
From Maidstone to Dover is roughly 36 miles — all part of the Kent area we cover.
Close by, we also cover Folkestone (7 miles), Deal (8 miles), Canterbury (15 miles).
What should you expect to pay in Dover?
Guide price for cracked lantern glass replacement: £295–£795 ex VAT (£354–£954 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?
In England, 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, so we set out the route in writing first. 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 Dover: questions
How do I get a price for cracked lantern glass replacement in Dover?
Send a few photos of the lantern and the problem, with your Dover 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 Dover?
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.
Is it covered by home insurance?
Accidental damage often is; check your policy. We can provide a written quote and photos for your insurer.
Why did my glass crack on a sunny day?
Thermal stress — one part of the pane heats faster than another, often where it's shaded or chipped at the edge.
Other lantern repairs in Dover
- Slipped glass panel repairs in Dover
- Solar control and self-cleaning glass upgrades in Dover
- uPVC roof lantern repairs in Dover
- Cleaning and maintenance in Dover
- Roof lantern replacement in Dover
- Orangery lantern repairs in Dover
Cracked lantern glass replacement near Dover
More about cracked lantern glass replacement · All roof lantern repairs in Dover