The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. We carry out flat roof junction and flashing repairs across Cheshire, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need 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
- Missing or loose edge trims and flashings
What usually causes it?
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 Cheshire
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
What should you expect to pay for flat roof junction and flashing repairs in Cheshire?
Most flat roof junction and flashing repairs jobs come in between £245 and £695 ex VAT (£294–£834 including 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 Cheshire: questions
What does a junction repair cost?
Usually £245–£695 ex VAT, confirmed in writing before work starts.
Can you repair a GRP roof without it showing?
Repairs are colour-matched as closely as possible, but new topcoat next to weathered topcoat can look slightly different at first.
Which towns in Cheshire do you cover?
All of Cheshire, including Chester, Warrington, Crewe, Ellesmere Port, Widnes, Runcorn. Rural and remote addresses are covered by arrangement.
How do I get a price for flat roof junction and flashing repairs in Cheshire?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in Cheshire
- Timber roof lantern repairs in Cheshire
- Aluminium roof lantern repairs in Cheshire
- Flat rooflight and skylight repairs in Cheshire
- Cleaning and maintenance in Cheshire
- Urgent leak make-safe in Cheshire
- Commercial roof lantern repairs in Cheshire
Nearby areas
- Flat roof junction and flashing repairs in Greater Manchester
- Flat roof junction and flashing repairs in Merseyside
- Flat roof junction and flashing repairs in Lancashire
- Flat roof junction and flashing repairs in Staffordshire
- Flat roof junction and flashing repairs in Shropshire
More about flat roof junction and flashing repairs · All roof lantern repairs in Cheshire