The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Abergavenny (NP7) and we'll tell you which it is — with the price agreed in writing before any work.
What you might be seeing
- Water appearing below the lantern rather than from the glass
- Soft or spongy timber at the base of the lantern
- Roof membrane not lapped up the kerb, or peeling off it
Why it happens
Membrane not dressed up
The flat roof covering should run up the kerb and be trimmed or flashed. If it stops short, water gets behind it.
Rotten timber
Untreated or wet timber kerbs rot from inside, so the lantern loses support and the seals open.
Roof lanterns in Abergavenny
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.
We cover Abergavenny as part of Gwent, about 16 miles from Newport, Gwent.
Close by, we also cover Pontypool (8 miles), Ebbw Vale (9 miles), Tredegar (10 miles).
Guide prices for upstand and kerb repairs in Abergavenny
Most upstand and kerb repairs jobs come in between £395 and £1,295 ex VAT (£474–£1,554 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 Wales?
In Wales, 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 (as applied in Wales), so we set out the route in writing first. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council 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.
Upstand and kerb repairs in Abergavenny: questions
How do I get a price for upstand and kerb repairs in Abergavenny?
Send a few photos of the lantern and the problem, with your Abergavenny postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Abergavenny do you cover?
As well as Abergavenny, we cover nearby Pontypool, Ebbw Vale, Tredegar, Cwmbran and the rest of Gwent.
How much does an upstand repair cost?
Typically £395–£1,295 ex VAT depending on size, timber condition and the roof covering. The fixed price is confirmed in writing before work starts.
Can you add insulation to the kerb?
Yes. Insulated kerbs reduce cold bridging and help with condensation around the opening.
Other lantern repairs in Abergavenny
- Misted glass unit replacement in Abergavenny
- Cracked lantern glass replacement in Abergavenny
- Condensation diagnosis and fixes in Abergavenny
- Aluminium roof lantern repairs in Abergavenny
- Opening vent and actuator repairs in Abergavenny
- Urgent leak make-safe in Abergavenny
Upstand and kerb repairs near Abergavenny
More about upstand and kerb repairs · All roof lantern repairs in Abergavenny