We carry out roof lantern leak repairs in Blackheath and across the SE3 area. A roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern.
Signs you need roof lantern leak repairs
- Drips from a glazing bar or the eaves beam when it rains
- Damp patches on the ceiling a short distance from the lantern
- A leak that only appears in wind-driven rain from one direction
Why it happens
Lifted or misaligned cappings
Top cappings clip or screw over each glazing bar. If one has lifted, been knocked or was never seated, rain gets straight under it.
Blocked eaves drainage
Most lanterns collect water in a channel inside the eaves beam and let it out through weep slots. Leaves, moss and grit block the slots and the channel overflows indoors.
Covering Blackheath and nearby
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.
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.
We cover Blackheath as part of Greater London, about 7 miles from Westminster.
Close by, we also cover Greenwich (1 mile), Catford (2 miles), Eltham (2 miles).
Guide prices for roof lantern leak repairs in Blackheath
Typical range: £195–£595 ex VAT, which is £234–£714 with 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.
Roof lantern leak repairs in Blackheath: questions
How do I get a price for roof lantern leak repairs in Blackheath?
Send a few photos of the lantern and the problem, with your Blackheath postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Blackheath do you cover?
As well as Blackheath, we cover nearby Greenwich, Catford, Eltham, Canary Wharf and the rest of Greater London.
Can you fix the leak in the rain?
We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.
Do I need to be home?
If we need to water-test or check the inside of the lantern, yes. Exterior-only work can sometimes be done with access arranged in advance.
Other lantern repairs in Blackheath
- Upstand and kerb repairs in Blackheath
- Cracked lantern glass replacement in Blackheath
- Solar control and self-cleaning glass upgrades in Blackheath
- Condensation diagnosis and fixes in Blackheath
- Timber roof lantern repairs in Blackheath
- Roof lantern replacement in Blackheath
Roof lantern leak repairs near Blackheath
More about roof lantern leak repairs · All roof lantern repairs in Blackheath