In Grantham, 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.
Is it time for ridge and hip repairs?
- Drips near the centre or top of the lantern
- A cracked or faded ridge end cap
- 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.
Poor original sealing
Ridge details are fiddly. If the original sealing was rushed, it's often the first place to leak.
Roof lanterns in Grantham
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.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
From Lincoln to Grantham is roughly 22 miles — all part of the Lincolnshire area we cover.
Neighbouring places we cover include Newark-on-Trent (13 miles), Melton Mowbray (14 miles), Oakham (17 miles).
Guide prices for ridge and hip repairs in Grantham
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 Grantham: questions
Do you need to visit to price ridge and hip repairs?
Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.
Can you repair a lantern someone else installed in Grantham?
Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.
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 Grantham
- Misted glass unit replacement in Grantham
- Cracked lantern glass replacement in Grantham
- Condensation diagnosis and fixes in Grantham
- Leak investigation and inspection in Grantham
- Urgent leak make-safe in Grantham
- Commercial roof lantern repairs in Grantham
Ridge and hip repairs near Grantham
More about ridge and hip repairs · All roof lantern repairs in Grantham