The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Banbury (OX16) and we'll tell you which it is — with the price agreed in writing before any work.
What you might be seeing
- Leak near the lantern but not from the frame
- Splits, blisters or lifted edges in the roof covering by the kerb
- Ponding on the roof next to the lantern
Common causes we find
Unbonded membrane
EPDM or single-ply that has come away from the kerb lets water run behind it.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
Roof lanterns in Banbury
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
Banbury is around 22 miles from Oxford, and both are within our Oxfordshire coverage.
Close by, we also cover Bicester (14 miles), Daventry (15 miles), Leamington Spa (17 miles).
How much should it cost?
Typical range: £245–£695 ex VAT, which is £294–£834 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.
Flat roof junction and flashing repairs in Banbury: questions
Can you repair a lantern someone else installed in Banbury?
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.
Which places near Banbury do you cover?
As well as Banbury, we cover nearby Bicester, Daventry, Leamington Spa, Stratford-upon-Avon and the rest of Oxfordshire.
Do you repair the whole flat roof?
We repair the area around the lantern. If the wider roof is failing we'll tell you and can quote, but we won't push a new roof if a local repair will do.
What does a junction repair cost?
Usually £245–£695 ex VAT, confirmed in writing before work starts.
Other lantern repairs in Banbury
- Roof lantern resealing in Banbury
- Cracked lantern glass replacement in Banbury
- Slipped glass panel repairs in Banbury
- Leak investigation and inspection in Banbury
- Orangery lantern repairs in Banbury
- Commercial roof lantern repairs in Banbury
Flat roof junction and flashing repairs near Banbury
More about flat roof junction and flashing repairs · All roof lantern repairs in Banbury