We carry out upstand and kerb repairs in Portishead and across the BS20 area. The upstand, or kerb, is the raised frame the lantern sits on.

What you might be seeing
- Soft or spongy timber at the base of the lantern
- 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.
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.
Covering Portishead and nearby
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.
Portishead is around 35 miles from Taunton, and both are within our Somerset coverage.
Close by, we also cover Nailsea (3 miles), Clevedon (5 miles), Bristol (8 miles).
What should you expect to pay in Portishead?
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 England?
In England, 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, so we set out the route in writing first. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.
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 Portishead: questions
How do I get a price for upstand and kerb repairs in Portishead?
Send a few photos of the lantern and the problem, with your Portishead 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 Portishead do you cover?
As well as Portishead, we cover nearby Nailsea, Clevedon, Bristol, Weston-super-Mare and the rest of Somerset.
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 Portishead
- Slipped glass panel repairs in Portishead
- Solar control and self-cleaning glass upgrades in Portishead
- Opening vent and actuator repairs in Portishead
- Flat rooflight and skylight repairs in Portishead
- Roof lantern replacement in Portishead
- Commercial roof lantern repairs in Portishead
Upstand and kerb repairs near Portishead
More about upstand and kerb repairs · All roof lantern repairs in Portishead