The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Cricklewood (NW2) and we'll tell you which it is — with the price agreed in writing before any work.
What you might be seeing
- Leak near the lantern but not from the frame
- Splits, blisters or lifted edges in the roof covering by the kerb
- Missing or loose edge trims and flashings
What usually causes it?
Unbonded membrane
EPDM or single-ply that has come away from the kerb lets water run behind it.
Cracked GRP
Fibreglass roofs can crack at the kerb corner where movement concentrates.
About Cricklewood and the NW2 area
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
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.
From Westminster to Cricklewood is roughly 5 miles — all part of the Greater London area we cover.
If you're just outside Cricklewood, we also cover Kilburn (1 mile), Willesden (2 miles), Chalk Farm (3 miles).
How much should it cost?
Guide price for flat roof junction and flashing repairs: £245–£695 ex VAT (£294–£834 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.
Flat roof junction and flashing repairs in Cricklewood: questions
How do I get a price for flat roof junction and flashing repairs in Cricklewood?
Send a few photos of the lantern and the problem, with your Cricklewood 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 Cricklewood do you cover?
As well as Cricklewood, we cover nearby Kilburn, Willesden, Chalk Farm, Notting Hill and the rest of Greater London.
Do you repair the whole flat roof?
We repair the area around the lantern. If the wider roof is failing we'll tell you and can quote, but we won't push a new roof if a local repair will do.
What does a junction repair cost?
Usually £245–£695 ex VAT, confirmed in writing before work starts.
Other lantern repairs in Cricklewood
- Roof lantern leak repairs in Cricklewood
- Roof lantern resealing in Cricklewood
- Eaves beam and gutter repairs in Cricklewood
- Upstand and kerb repairs in Cricklewood
- Solar control and self-cleaning glass upgrades in Cricklewood
- Condensation diagnosis and fixes in Cricklewood
Flat roof junction and flashing repairs near Cricklewood
More about flat roof junction and flashing repairs · All roof lantern repairs in Cricklewood