In Cheshunt, as everywhere, the junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos and we'll tell you what we think has failed.

Is it time for flat roof junction and flashing repairs?
- 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
What usually causes it?
Cracked GRP
Fibreglass roofs can crack at the kerb corner where movement concentrates.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
Roof lanterns in Cheshunt
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 Cheshunt is roughly 13 miles — all part of the Hertfordshire area we cover.
We also cover nearby Waltham Abbey (1 mile), Enfield (4 miles), Hoddesdon (4 miles).
Guide prices for flat roof junction and flashing repairs in Cheshunt
Guide price for flat roof junction and flashing repairs: £245–£695 ex VAT (£294–£834 inc 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.
Flat roof junction and flashing repairs in Cheshunt: questions
How do I get a price for flat roof junction and flashing repairs in Cheshunt?
Send a few photos of the lantern and the problem, with your Cheshunt postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Cheshunt?
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.
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 Cheshunt
- Upstand and kerb repairs in Cheshunt
- Condensation diagnosis and fixes in Cheshunt
- Aluminium roof lantern repairs in Cheshunt
- Urgent leak make-safe in Cheshunt
- Orangery lantern repairs in Cheshunt
- Commercial roof lantern repairs in Cheshunt
Flat roof junction and flashing repairs near Cheshunt
More about flat roof junction and flashing repairs · All roof lantern repairs in Cheshunt