We carry out flat roof junction and flashing repairs in Gainsborough and across the DN21 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
- Leak near the lantern but not from the frame
- Missing or loose edge trims and flashings
- 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.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
About Gainsborough and the DN21 area
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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
We cover Gainsborough as part of Lincolnshire, about 14 miles from Lincoln.
Neighbouring places we cover include Retford (8 miles), Scunthorpe (14 miles), Lincoln (14 miles).
What should you expect to pay in Gainsborough?
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?
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 Gainsborough: questions
How do I get a price for flat roof junction and flashing repairs in Gainsborough?
Send a few photos of the lantern and the problem, with your Gainsborough postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Gainsborough?
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.
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 Gainsborough
- Ridge and hip repairs in Gainsborough
- Cracked lantern glass replacement in Gainsborough
- Solar control and self-cleaning glass upgrades in Gainsborough
- Opening vent and actuator repairs in Gainsborough
- Roof lantern respraying in Gainsborough
- Flat rooflight and skylight repairs in Gainsborough
Flat roof junction and flashing repairs near Gainsborough
More about flat roof junction and flashing repairs · All roof lantern repairs in Gainsborough