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 Isle of Wight, 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.
Cracked GRP
Fibreglass roofs can crack at the kerb corner where movement concentrates.
Roof lanterns in Isle of Wight
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
What should you expect to pay for flat roof junction and flashing repairs in Isle of Wight?
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?
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 Isle of Wight: 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 Isle of Wight do you cover?
All of Isle of Wight, including Newport, Isle of Wight, Ryde, Cowes, Sandown. Rural and remote addresses are covered by arrangement.
How do I get a price for flat roof junction and flashing repairs in Isle of Wight?
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 Isle of Wight
- Roof lantern resealing in Isle of Wight
- Glazing bar and capping repairs in Isle of Wight
- Ridge and hip repairs in Isle of Wight
- Eaves beam and gutter repairs in Isle of Wight
- Condensation diagnosis and fixes in Isle of Wight
- Timber roof lantern repairs in Isle of Wight
Nearby areas
- Flat roof junction and flashing repairs in Hampshire
- Flat roof junction and flashing repairs in Dorset
- Flat roof junction and flashing repairs in West Sussex
- Flat roof junction and flashing repairs in Berkshire
- Flat roof junction and flashing repairs in Wiltshire
More about flat roof junction and flashing repairs · All roof lantern repairs in Isle of Wight