A cracked pane in a roof lantern needs prompt attention because the glass is overhead. Send photos from Stevenage (SG1) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need cracked lantern glass replacement
- A visible crack in the outer or inner pane
- A crack running from an edge (often thermal stress)
- Broken glass inside the room — keep everyone out of the area
Why it happens
Impact
Hail, falling branches or dropped tools.
Spontaneous breakage
Toughened glass can occasionally break without warning, which is why laminated inner panes are recommended overhead.
Covering Stevenage and nearby
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
We cover Stevenage as part of Hertfordshire, about 12 miles from St Albans.
Neighbouring places we cover include Hitchin (5 miles), Letchworth Garden City (5 miles), Welwyn Garden City (7 miles).
Guide prices for cracked lantern glass replacement in Stevenage
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?
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 Stevenage: questions
Do you need to visit to price cracked lantern glass 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.
Which places near Stevenage do you cover?
As well as Stevenage, we cover nearby Hitchin, Letchworth Garden City, Welwyn Garden City, Harpenden and the rest of Hertfordshire.
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.
Other lantern repairs in Stevenage
- Upstand and kerb repairs in Stevenage
- Flat roof junction and flashing repairs in Stevenage
- Slipped glass panel repairs in Stevenage
- Opening vent and actuator repairs in Stevenage
- Flat rooflight and skylight repairs in Stevenage
- Urgent leak make-safe in Stevenage
Cracked lantern glass replacement near Stevenage
More about cracked lantern glass replacement · All roof lantern repairs in Stevenage