We carry out flat roof junction and flashing repairs in Sunbury-on-Thames and across the TW16 area. The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions.
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
- Missing or loose edge trims and flashings
What usually causes it?
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.
Covering Sunbury-on-Thames and nearby
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
Sunbury-on-Thames is around 13 miles from Guildford, and both are within our Surrey coverage.
Neighbouring places we cover include Walton-on-Thames (1 mile), Hampton (2 miles), Hanworth (3 miles).
What should you expect to pay in Sunbury-on-Thames?
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 Sunbury-on-Thames: questions
Do you cover Sunbury-on-Thames?
Yes. We cover Sunbury-on-Thames, including the TW16 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.
How do I get a price for flat roof junction and flashing repairs in Sunbury-on-Thames?
Send a few photos of the lantern and the problem, with your Sunbury-on-Thames postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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 Sunbury-on-Thames
- Roof lantern leak repairs in Sunbury-on-Thames
- Roof lantern resealing in Sunbury-on-Thames
- Eaves beam and gutter repairs in Sunbury-on-Thames
- Upstand and kerb repairs in Sunbury-on-Thames
- Misted glass unit replacement in Sunbury-on-Thames
- Solar control and self-cleaning glass upgrades in Sunbury-on-Thames
Flat roof junction and flashing repairs near Sunbury-on-Thames
More about flat roof junction and flashing repairs · All roof lantern repairs in Sunbury-on-Thames