The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Hampton (TW12) 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
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.
About Hampton and the TW12 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.
London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.
Hampton is around 12 miles from Westminster, and both are within our Greater London coverage.
We also cover nearby Hanworth (2 miles), Sunbury-on-Thames (2 miles), Walton-on-Thames (3 miles).
How much should it cost?
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 Hampton: questions
Do you cover Hampton?
Yes. We cover Hampton, including the TW12 postcode area, as part of Greater London. 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.
How do I get a price for flat roof junction and flashing repairs in Hampton?
Send a few photos of the lantern and the problem, with your Hampton postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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.
Other lantern repairs in Hampton
- Ridge and hip repairs in Hampton
- Cracked lantern glass replacement in Hampton
- Leak investigation and inspection in Hampton
- Cleaning and maintenance in Hampton
- Orangery lantern repairs in Hampton
- Commercial roof lantern repairs in Hampton
Flat roof junction and flashing repairs near Hampton
More about flat roof junction and flashing repairs · All roof lantern repairs in Hampton