Most roof lantern leaks start as small, preventable problems: blocked eaves, a lifted capping, a tired seal. Send photos from Northolt (UB5) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need cleaning and maintenance
- Dirty glass or green algae on the frame
- Leaves or moss at the eaves
- The lantern is under trees
Why it happens
Debris
Leaves and moss block drainage.
Algae and dirt
Hold moisture against seals and spoil the view.
About Northolt and the UB5 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.
Northolt is around 11 miles from Westminster, and both are within our Greater London coverage.
If you're just outside Northolt, we also cover Greenford (1 mile), Harrow (3 miles), Southall (3 miles).
What should you expect to pay in Northolt?
Guide price for cleaning and maintenance: £95–£245 ex VAT (£114–£294 inc VAT), per visit. 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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.
Cleaning and maintenance in Northolt: questions
Can you repair a lantern someone else installed in Northolt?
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.
Which places near Northolt do you cover?
As well as Northolt, we cover nearby Greenford, Harrow, Southall, Ruislip and the rest of Greater London.
What does a maintenance visit cost?
Usually £95–£245 ex VAT per visit depending on size and access, confirmed in writing before the visit.
Do you clean the inside of the glass?
We can, where safe access from inside is possible; let us know when booking.
Other lantern repairs in Northolt
- Roof lantern leak repairs in Northolt
- Roof lantern resealing in Northolt
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- Flat rooflight and skylight repairs in Northolt
- Leak investigation and inspection in Northolt
- Orangery lantern repairs in Northolt
Cleaning and maintenance near Northolt
More about cleaning and maintenance · All roof lantern repairs in Northolt