The ridge is where the hip bars and glazing bars meet at the top of a lantern, usually under a moulded or pressed end cap. 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 ridge and hip repairs
- A cracked or faded ridge end cap
- Sealant around the ridge cap split or missing
- Staining along the hip bars inside
What usually causes it?
Movement at the junction
Several bars meet at one point and each moves slightly with temperature; the seals at the ridge take the strain.
Poor original sealing
Ridge details are fiddly. If the original sealing was rushed, it's often the first place to leak.
Roof lanterns in Northolt
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.
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 Northolt as part of Greater London, about 11 miles from Westminster.
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?
Typical range: £195–£445 ex VAT, which is £234–£534 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?
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.
Ridge and hip repairs in Northolt: questions
How do I get a price for ridge and hip repairs in Northolt?
Send a few photos of the lantern and the problem, with your Northolt 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 Northolt do you cover?
As well as Northolt, we cover nearby Greenford, Harrow, Southall, Ruislip and the rest of Greater London.
My ridge cap is a different colour from the frame — does that matter?
Faded or chalky caps are a sign of UV damage. Colour alone isn't a leak, but brittle caps crack, so we check them.
Can you replace just the ridge cap?
Yes, if a compatible cap is available and the seals underneath are sound.
Other lantern repairs in Northolt
- Roof lantern leak repairs in Northolt
- Eaves beam and gutter repairs in Northolt
- Upstand and kerb repairs in Northolt
- Slipped glass panel repairs in Northolt
- Leak investigation and inspection in Northolt
- Roof lantern replacement in Northolt
Ridge and hip repairs near Northolt
More about ridge and hip repairs · All roof lantern repairs in Northolt