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 Hounslow (TW3) and we'll tell you which it is — with the price agreed in writing before any work.

Is it time for 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
Common causes we find
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.
Covering Hounslow and nearby
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.
We cover Hounslow as part of Greater London, about 10 miles from Westminster.
We also cover nearby Isleworth (1 mile), Heston (1 mile), Richmond (2 miles).
How much should it cost?
Most ridge and hip repairs jobs come in between £195 and £445 ex VAT (£234–£534 including 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.
Ridge and hip repairs in Hounslow: questions
How do I get a price for ridge and hip repairs in Hounslow?
Send a few photos of the lantern and the problem, with your Hounslow 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 Hounslow do you cover?
As well as Hounslow, we cover nearby Isleworth, Heston, Richmond, Hanworth 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 Hounslow
- Upstand and kerb repairs in Hounslow
- Misted glass unit replacement in Hounslow
- Cracked lantern glass replacement in Hounslow
- Slipped glass panel repairs in Hounslow
- Flat rooflight and skylight repairs in Hounslow
- Urgent leak make-safe in Hounslow
Ridge and hip repairs near Hounslow
More about ridge and hip repairs · All roof lantern repairs in Hounslow