In Blackheath, as everywhere, 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 and we'll tell you what we think has failed.

Signs you need ridge and hip repairs
- Drips near the centre or top of the lantern
- Sealant around the ridge cap split or missing
- Staining along the hip bars inside
What usually causes it?
UV-damaged end caps
Plastic ridge end caps become brittle and crack, especially on south-facing lanterns.
Movement at the junction
Several bars meet at one point and each moves slightly with temperature; the seals at the ridge take the strain.
Covering Blackheath and nearby
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 Blackheath is roughly 7 miles — all part of the Greater London area we cover.
If you're just outside Blackheath, we also cover Greenwich (1 mile), Catford (2 miles), Eltham (2 miles).
Guide prices for ridge and hip repairs in Blackheath
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?
Most lantern repairs in England need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 apply and we confirm how the work will be signed off before we start. 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 Blackheath: questions
Do you cover Blackheath?
Yes. We cover Blackheath, including the SE3 postcode area, as part of Greater London. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
How do I get a price for ridge and hip 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.
What does a ridge repair cost?
Usually £195–£445 ex VAT for a standard lantern, confirmed in writing before work starts.
Can you replace just the ridge cap?
Yes, if a compatible cap is available and the seals underneath are sound.
Other lantern repairs in Blackheath
- Misted glass unit replacement in Blackheath
- Cracked lantern glass replacement in Blackheath
- Slipped glass panel repairs in Blackheath
- Solar control and self-cleaning glass upgrades in Blackheath
- Timber roof lantern repairs in Blackheath
- uPVC roof lantern repairs in Blackheath
Ridge and hip repairs near Blackheath
More about ridge and hip repairs · All roof lantern repairs in Blackheath