The upstand, or kerb, is the raised frame the lantern sits on. We carry out upstand and kerb repairs across West Glamorgan, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need upstand and kerb repairs
- Water appearing below the lantern rather than from the glass
- Roof membrane not lapped up the kerb, or peeling off it
- Ponding water against the kerb after rain
What usually causes it?
Kerb too low
If the kerb doesn't rise enough above the finished roof, water sits against the joint during heavy rain.
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.
Roof lanterns in West Glamorgan
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
What should you expect to pay for upstand and kerb repairs in West Glamorgan?
Guide price for upstand and kerb repairs: £395–£1,295 ex VAT (£474–£1,554 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 Wales?
Most lantern repairs in Wales need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 (as applied in Wales) apply and we confirm how the work will be signed off before we start. 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 West Glamorgan: questions
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.
Which towns in West Glamorgan do you cover?
All of West Glamorgan, including Swansea, Neath, Gorseinon, Port Talbot. Rural and remote addresses are covered by arrangement.
How do I get a price for upstand and kerb repairs in West Glamorgan?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in West Glamorgan
- Roof lantern leak repairs in West Glamorgan
- Roof lantern resealing in West Glamorgan
- Slipped glass panel repairs in West Glamorgan
- Flat rooflight and skylight repairs in West Glamorgan
- Cleaning and maintenance in West Glamorgan
- Roof lantern replacement in West Glamorgan
Nearby areas
- Upstand and kerb repairs in Mid Glamorgan
- Upstand and kerb repairs in South Glamorgan
- Upstand and kerb repairs in Dyfed
- Upstand and kerb repairs in Gwent
- Upstand and kerb repairs in Powys
More about upstand and kerb repairs · All roof lantern repairs in West Glamorgan