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 Potters Bar (EN6) 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?
- Drips near the centre or top of the lantern
- A cracked or faded ridge end cap
- Sealant around the ridge cap split or missing
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 Potters Bar
Lanterns in central England see a bit of everything — summer sun that ages seals and end caps, autumn leaf fall that blocks eaves, and frosty mornings that bring condensation. A yearly check covers all three.
From St Albans to Potters Bar is roughly 8 miles — all part of the Hertfordshire area we cover.
Neighbouring places we cover include Barnet (3 miles), Enfield (5 miles), Borehamwood (5 miles).
How much should it cost?
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?
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 Potters Bar: questions
Do you cover Potters Bar?
Yes. We cover Potters Bar, including the EN6 postcode area, as part of Hertfordshire. 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 Potters Bar?
Send a few photos of the lantern and the problem, with your Potters Bar 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 Potters Bar
- Roof lantern leak repairs in Potters Bar
- Upstand and kerb repairs in Potters Bar
- Aluminium roof lantern repairs in Potters Bar
- Flat rooflight and skylight repairs in Potters Bar
- Cleaning and maintenance in Potters Bar
- Urgent leak make-safe in Potters Bar
Ridge and hip repairs near Potters Bar
More about ridge and hip repairs · All roof lantern repairs in Potters Bar