In Castle Douglas, 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?
- 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
Common causes we find
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.
About Castle Douglas and the DG7 area
Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.
From Dumfries to Castle Douglas is roughly 15 miles — all part of the Dumfries and Galloway area we cover.
Close by, we also cover Kirkcudbright (9 miles), Dumfries (15 miles), Lockerbie (26 miles).
Guide prices for flat roof junction and flashing repairs in Castle Douglas
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 Scotland?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Scotland. Replacing the whole lantern or enlarging the opening is different and falls under the Building (Scotland) Regulations 2004; we confirm in writing which route applies before any replacement. Listed buildings in Scotland need listed building consent from the planning authority for alterations, with Historic Environment Scotland guidance; check before changing a lantern on a listed property.
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 Castle Douglas: questions
Do you cover Castle Douglas?
Yes. We cover Castle Douglas, including the DG7 postcode area, as part of Dumfries and Galloway. 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.
Can you repair a lantern someone else installed in Castle Douglas?
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 Castle Douglas
- Misted glass unit replacement in Castle Douglas
- Cracked lantern glass replacement in Castle Douglas
- Condensation diagnosis and fixes in Castle Douglas
- Timber roof lantern repairs in Castle Douglas
- Roof lantern respraying in Castle Douglas
- Orangery lantern repairs in Castle Douglas
Flat roof junction and flashing repairs near Castle Douglas
More about flat roof junction and flashing repairs · All roof lantern repairs in Castle Douglas