In Pontypridd, 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
- Roof membrane not lapped up the kerb, or peeling off it
- Ponding water against the kerb after rain
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.
Rotten timber
Untreated or wet timber kerbs rot from inside, so the lantern loses support and the seals open.
About Pontypridd and the CF37 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 Bridgend to Pontypridd is roughly 12 miles — all part of the Mid Glamorgan area we cover.
If you're just outside Pontypridd, we also cover Tonypandy (5 miles), Caerphilly (6 miles), Rhondda (6 miles).
What should you expect to pay in Pontypridd?
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?
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 Pontypridd: questions
How do I get a price for upstand and kerb repairs in Pontypridd?
Send a few photos of the lantern and the problem, with your Pontypridd postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Pontypridd?
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.
Can you add insulation to the kerb?
Yes. Insulated kerbs reduce cold bridging and help with condensation around the opening.
Will my ceiling need repairing?
If water has soaked the lining it may need making good after the leak is fixed; we can advise, but internal decorating isn't included unless quoted.
Other lantern repairs in Pontypridd
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- Slipped glass panel repairs in Pontypridd
- uPVC roof lantern repairs in Pontypridd
- Leak investigation and inspection in Pontypridd
- Cleaning and maintenance in Pontypridd
- Commercial roof lantern repairs in Pontypridd
Upstand and kerb repairs near Pontypridd
More about upstand and kerb repairs · All roof lantern repairs in Pontypridd