The upstand, or kerb, is the raised frame the lantern sits on. Send photos from Maidenhead (SL6) and we'll tell you which it is — with the price agreed in writing before any work.

What you might be seeing
- 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?
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 Maidenhead and the SL6 area
Lanterns in central England see a bit of everything — summer sun that ages seals and end caps, autumn leaf fall that blocks eaves, and frosty mornings that bring condensation. A yearly check covers all three.
Maidenhead is around 12 miles from Reading, and both are within our Berkshire coverage.
Close by, we also cover Slough (5 miles), Windsor (6 miles), High Wycombe (7 miles).
What should you expect to pay in Maidenhead?
Typical range: £395–£1,295 ex VAT, which is £474–£1,554 with 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. 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 Maidenhead: questions
Do you cover Maidenhead?
Yes. We cover Maidenhead, including the SL6 postcode area, as part of Berkshire. 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 Maidenhead do you cover?
As well as Maidenhead, we cover nearby Slough, Windsor, High Wycombe, Bracknell and the rest of Berkshire.
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 Maidenhead
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- Eaves beam and gutter repairs in Maidenhead
- Cracked lantern glass replacement in Maidenhead
- Solar control and self-cleaning glass upgrades in Maidenhead
- Opening vent and actuator repairs in Maidenhead
- Orangery lantern repairs in Maidenhead
Upstand and kerb repairs near Maidenhead
More about upstand and kerb repairs · All roof lantern repairs in Maidenhead