In Ystradgynlais, as everywhere, the upstand, or kerb, is the raised frame the lantern sits on. Send photos and we'll tell you what we think has failed.
Is it time for upstand and kerb repairs?
- Soft or spongy timber at the base of the lantern
- Roof membrane not lapped up the kerb, or peeling off it
- Cold, damp or mouldy lining around the opening
Common causes we find
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.
About Ystradgynlais and the SA9 area
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.
If you're just outside Ystradgynlais, we also cover Neath (7 miles), Ammanford (10 miles), Maesteg (12 miles).
How much should it cost?
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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. 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 Ystradgynlais: questions
Do you cover Ystradgynlais?
Yes. We cover Ystradgynlais, including the SA9 postcode area, as part of Powys. 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 upstand and kerb repairs in Ystradgynlais?
Send a few photos of the lantern and the problem, with your Ystradgynlais postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
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 Ystradgynlais
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- Solar control and self-cleaning glass upgrades in Ystradgynlais
- Aluminium roof lantern repairs in Ystradgynlais
- uPVC roof lantern repairs in Ystradgynlais
- Cleaning and maintenance in Ystradgynlais
- Commercial roof lantern repairs in Ystradgynlais
Upstand and kerb repairs near Ystradgynlais
More about upstand and kerb repairs · All roof lantern repairs in Ystradgynlais