We carry out flat roof junction and flashing repairs in Hanworth and across the TW13 area. The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions.
Signs you need flat roof junction and flashing repairs
- Splits, blisters or lifted edges in the roof covering by the kerb
- Missing or loose edge trims and flashings
- Ponding on the roof next to the lantern
Why it happens
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 Hanworth
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.
From Westminster to Hanworth is roughly 12 miles — all part of the Greater London area we cover.
If you're just outside Hanworth, we also cover Hampton (2 miles), Feltham (2 miles), Sunbury-on-Thames (3 miles).
What should you expect to pay in Hanworth?
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?
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 Hanworth: questions
Can you repair a lantern someone else installed in Hanworth?
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.
Which places near Hanworth do you cover?
As well as Hanworth, we cover nearby Hampton, Feltham, Sunbury-on-Thames, Hounslow and the rest of Greater London.
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 Hanworth
- Glazing bar and capping repairs in Hanworth
- Eaves beam and gutter repairs in Hanworth
- Aluminium roof lantern repairs in Hanworth
- uPVC roof lantern repairs in Hanworth
- Flat rooflight and skylight repairs in Hanworth
- Urgent leak make-safe in Hanworth
Flat roof junction and flashing repairs near Hanworth
More about flat roof junction and flashing repairs · All roof lantern repairs in Hanworth