In Merthyr Tydfil, 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?
- Water appearing below the lantern rather than from the glass
- Ponding water against the kerb after rain
- Cold, damp or mouldy lining around the opening
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.
Rotten timber
Untreated or wet timber kerbs rot from inside, so the lantern loses support and the seals open.
Roof lanterns in Merthyr Tydfil
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 Bridgend to Merthyr Tydfil is roughly 19 miles — all part of the Mid Glamorgan area we cover.
We also cover nearby Aberdare (4 miles), Tredegar (6 miles), Rhondda (7 miles).
Guide prices for upstand and kerb repairs in Merthyr Tydfil
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?
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 Merthyr Tydfil: questions
Do you cover Merthyr Tydfil?
Yes. We cover Merthyr Tydfil, including the CF47 postcode area, as part of Mid Glamorgan. 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.
Which places near Merthyr Tydfil do you cover?
As well as Merthyr Tydfil, we cover nearby Aberdare, Tredegar, Rhondda, Ebbw Vale and the rest of Mid Glamorgan.
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 Merthyr Tydfil
- Roof lantern leak repairs in Merthyr Tydfil
- Roof lantern resealing in Merthyr Tydfil
- Eaves beam and gutter repairs in Merthyr Tydfil
- Misted glass unit replacement in Merthyr Tydfil
- Solar control and self-cleaning glass upgrades in Merthyr Tydfil
- Leak investigation and inspection in Merthyr Tydfil
Upstand and kerb repairs near Merthyr Tydfil
More about upstand and kerb repairs · All roof lantern repairs in Merthyr Tydfil