In Leatherhead, as everywhere, the junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos and we'll tell you what we think has failed.

Is it time for 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
Common causes we find
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 Leatherhead
Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.
We cover Leatherhead as part of Surrey, about 11 miles from Guildford.
If you're just outside Leatherhead, we also cover Epsom (4 miles), Ewell (5 miles), Esher (5 miles).
Guide prices for flat roof junction and flashing repairs in Leatherhead
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 Leatherhead: questions
Do you cover Leatherhead?
Yes. We cover Leatherhead, including the KT22 postcode area, as part of Surrey. 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.
Which places near Leatherhead do you cover?
As well as Leatherhead, we cover nearby Epsom, Ewell, Esher, Banstead and the rest of Surrey.
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.
What does a junction repair cost?
Usually £245–£695 ex VAT, confirmed in writing before work starts.
Other lantern repairs in Leatherhead
- Ridge and hip repairs in Leatherhead
- Misted glass unit replacement in Leatherhead
- Opening vent and actuator repairs in Leatherhead
- Roof lantern respraying in Leatherhead
- Flat rooflight and skylight repairs in Leatherhead
- Orangery lantern repairs in Leatherhead
Flat roof junction and flashing repairs near Leatherhead
More about flat roof junction and flashing repairs · All roof lantern repairs in Leatherhead