We carry out roof lantern leak repairs in Bishop's Stortford and across the CM23 area. A roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern.

What you might be seeing
- Drips from a glazing bar or the eaves beam when it rains
- Brown staining or bubbling paint on the plasterboard lining around the lantern
- Water running down the inside face of the glass
What usually causes it?
Lifted or misaligned cappings
Top cappings clip or screw over each glazing bar. If one has lifted, been knocked or was never seated, rain gets straight under it.
Blocked eaves drainage
Most lanterns collect water in a channel inside the eaves beam and let it out through weep slots. Leaves, moss and grit block the slots and the channel overflows indoors.
Covering Bishop's Stortford and nearby
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.
Bishop's Stortford is around 23 miles from St Albans, and both are within our Hertfordshire coverage.
If you're just outside Bishop's Stortford, we also cover Harlow (7 miles), Hoddesdon (10 miles), Hertford (11 miles).
Guide prices for roof lantern leak repairs in Bishop's Stortford
Typical range: £195–£595 ex VAT, which is £234–£714 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?
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.
Roof lantern leak repairs in Bishop's Stortford: questions
Do you need to visit to price roof lantern leak 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.
Which places near Bishop's Stortford do you cover?
As well as Bishop's Stortford, we cover nearby Harlow, Hoddesdon, Hertford, Cheshunt and the rest of Hertfordshire.
Can you fix the leak in the rain?
We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.
Will you show me what was wrong?
Yes. We photograph the failed detail and the finished repair and send them to you with the invoice.
Other lantern repairs in Bishop's Stortford
- Roof lantern resealing in Bishop's Stortford
- Eaves beam and gutter repairs in Bishop's Stortford
- Condensation diagnosis and fixes in Bishop's Stortford
- Opening vent and actuator repairs in Bishop's Stortford
- Leak investigation and inspection in Bishop's Stortford
- Roof lantern replacement in Bishop's Stortford
Roof lantern leak repairs near Bishop's Stortford
More about roof lantern leak repairs · All roof lantern repairs in Bishop's Stortford