We carry out commercial roof lantern repairs in Carshalton and across the SM5 area. Commercial lanterns and atrium rooflights fail in the same ways as domestic ones, but access, safety and disruption matter more.

Signs you need commercial roof lantern repairs
- Leaks into trading or office areas
- Multiple lanterns on one roof needing a programme
- Insurance or landlord requirement for a report
Common causes we find
Access
Roof access, edge protection and permits all affect the plan.
Deferred maintenance
Leaks appear when maintenance has slipped.
Roof lanterns in Carshalton
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.
London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.
From Westminster to Carshalton is roughly 9 miles — all part of the Greater London area we cover.
We also cover nearby Wallington (1 mile), Sutton (2 miles), Mitcham (2 miles).
How much should it cost?
Guide price for commercial roof lantern repairs: £495–£2,995 ex VAT (£594–£3,594 inc VAT), per lantern. 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.
Commercial roof lantern repairs in Carshalton: questions
Do you cover Carshalton?
Yes. We cover Carshalton, including the SM5 postcode area, as part of Greater London. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
How do I get a price for commercial roof lantern repairs in Carshalton?
Send a few photos of the lantern and the problem, with your Carshalton postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
What do commercial lantern repairs cost?
From about £495 ex VAT per lantern; programmes, access equipment and out-of-hours work are priced on survey and confirmed in writing.
Do you provide RAMS?
Yes, before work starts.
Other lantern repairs in Carshalton
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- Condensation diagnosis and fixes in Carshalton
- uPVC roof lantern repairs in Carshalton
- Opening vent and actuator repairs in Carshalton
- Roof lantern replacement in Carshalton
Commercial roof lantern repairs near Carshalton
More about commercial roof lantern repairs · All roof lantern repairs in Carshalton