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 Hertford (SG13) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- Drips near the centre or top of the lantern
- Sealant around the ridge cap split or missing
- Staining along the hip bars inside
Why it happens
UV-damaged end caps
Plastic ridge end caps become brittle and crack, especially on south-facing lanterns.
Poor original sealing
Ridge details are fiddly. If the original sealing was rushed, it's often the first place to leak.
Covering Hertford and nearby
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
Hertford is around 11 miles from St Albans, and both are within our Hertfordshire coverage.
We also cover nearby Hoddesdon (4 miles), Welwyn Garden City (6 miles), Hatfield (7 miles).
Guide prices for ridge and hip repairs in Hertford
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 Hertford: questions
How do I get a price for ridge and hip repairs in Hertford?
Send a few photos of the lantern and the problem, with your Hertford 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 Hertford do you cover?
As well as Hertford, we cover nearby Hoddesdon, Welwyn Garden City, Hatfield, Cheshunt and the rest of Hertfordshire.
What does a ridge repair cost?
Usually £195–£445 ex VAT for a standard lantern, confirmed in writing before work starts.
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.
Other lantern repairs in Hertford
- Roof lantern resealing in Hertford
- Upstand and kerb repairs in Hertford
- Misted glass unit replacement in Hertford
- Solar control and self-cleaning glass upgrades in Hertford
- Flat rooflight and skylight repairs in Hertford
- Leak investigation and inspection in Hertford
Ridge and hip repairs near Hertford
More about ridge and hip repairs · All roof lantern repairs in Hertford