The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Potters Bar (EN6) and we'll tell you which it is — with the price agreed in writing before any work.
Signs you need upstand and kerb repairs
- Water appearing below the lantern rather than from the glass
- Soft or spongy timber at the base of the lantern
- Ponding water against the kerb after rain
What usually causes it?
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.
Rotten timber
Untreated or wet timber kerbs rot from inside, so the lantern loses support and the seals open.
Roof lanterns in Potters Bar
Leaf fall from garden trees is the most common cause of eaves overflow on suburban extensions. If your lantern sits near trees, clearing the eaves channel each autumn prevents a lot of drips.
We cover Potters Bar as part of Hertfordshire, about 8 miles from St Albans.
We also cover nearby Barnet (3 miles), Enfield (5 miles), Borehamwood (5 miles).
Guide prices for upstand and kerb repairs in Potters Bar
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 Potters Bar: questions
Do you cover Potters Bar?
Yes. We cover Potters Bar, including the EN6 postcode area, as part of Hertfordshire. 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.
Can you repair a lantern someone else installed in Potters Bar?
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 Potters Bar
- Roof lantern resealing in Potters Bar
- Flat roof junction and flashing repairs in Potters Bar
- Slipped glass panel repairs in Potters Bar
- Timber roof lantern repairs in Potters Bar
- Cleaning and maintenance in Potters Bar
- Urgent leak make-safe in Potters Bar
Upstand and kerb repairs near Potters Bar
More about upstand and kerb repairs · All roof lantern repairs in Potters Bar