The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Gerrards Cross (SL9) and we'll tell you which it is — with the price agreed in writing before any work.
Is it time for 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
- 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 Gerrards Cross
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
From Aylesbury to Gerrards Cross is roughly 19 miles — all part of the Buckinghamshire area we cover.
Close by, we also cover Chalfont St Peter (2 miles), Uxbridge (4 miles), Rickmansworth (5 miles).
Guide prices for flat roof junction and flashing repairs in Gerrards Cross
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 Gerrards Cross: questions
Can you repair a lantern someone else installed in Gerrards Cross?
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 Gerrards Cross do you cover?
As well as Gerrards Cross, we cover nearby Chalfont St Peter, Uxbridge, Rickmansworth, Slough and the rest of Buckinghamshire.
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 Gerrards Cross
- Glazing bar and capping repairs in Gerrards Cross
- Upstand and kerb repairs in Gerrards Cross
- Slipped glass panel repairs in Gerrards Cross
- Aluminium roof lantern repairs in Gerrards Cross
- Urgent leak make-safe in Gerrards Cross
- Commercial roof lantern repairs in Gerrards Cross
Flat roof junction and flashing repairs near Gerrards Cross
More about flat roof junction and flashing repairs · All roof lantern repairs in Gerrards Cross