The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Herne Bay (CT6) and we'll tell you which it is — with the price agreed in writing before any work.

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
Common causes we find
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.
About Herne Bay and the CT6 area
Drier, sunnier parts of the UK are kinder to seals than the wet west, but strong sun ages sealant, gaskets and plastic end caps, and south- or west-facing lanterns can make rooms very warm. Solar control glass and an opening vent help.
Near the coast, salt in the air is hard on aluminium finishes and fixings; washing the frame occasionally and touching in chips keeps corrosion away.
Herne Bay is around 27 miles from Maidstone, and both are within our Kent coverage.
If you're just outside Herne Bay, we also cover Whitstable (5 miles), Canterbury (7 miles), Faversham (11 miles).
Guide prices for flat roof junction and flashing repairs in Herne Bay
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 Herne Bay: questions
Do you cover Herne Bay?
Yes. We cover Herne Bay, including the CT6 postcode area, as part of Kent. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Can you repair a lantern someone else installed in Herne Bay?
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.
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.
Other lantern repairs in Herne Bay
- Glazing bar and capping repairs in Herne Bay
- Eaves beam and gutter repairs in Herne Bay
- Misted glass unit replacement in Herne Bay
- Solar control and self-cleaning glass upgrades in Herne Bay
- Aluminium roof lantern repairs in Herne Bay
- uPVC roof lantern repairs in Herne Bay
Flat roof junction and flashing repairs near Herne Bay
More about flat roof junction and flashing repairs · All roof lantern repairs in Herne Bay