Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. 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 running down one glazing bar inside
- Rattling or whistling in wind
- End caps missing at the bottom of a bar
Why it happens
Fixings working loose
Screws and clips that hold the capping relax with thermal movement, so the clamp on the glass weakens.
Damage
Ladders, window cleaning or someone stepping on a lantern can bend a capping or unclip it.
About Maidenhead and the SL6 area
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.
From Reading to Maidenhead is roughly 12 miles — all part of the Berkshire area we cover.
We also cover nearby Slough (5 miles), Windsor (6 miles), High Wycombe (7 miles).
Guide prices for glazing bar and capping repairs in Maidenhead
Typical range: £165–£395 ex VAT, which is £198–£474 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?
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.
Glazing bar and capping 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.
Can a capping just be clipped back on?
Sometimes, if nothing underneath has failed. We check the gaskets first, because clipping a capping over a perished gasket doesn't stop the leak.
Do you repair uPVC and timber lantern bars too?
Yes. Timber lanterns use different beads and cappings, and we repair those as part of timber lantern repairs.
Other lantern repairs in Maidenhead
- Roof lantern leak repairs in Maidenhead
- Flat roof junction and flashing repairs in Maidenhead
- Cracked lantern glass replacement in Maidenhead
- Slipped glass panel repairs in Maidenhead
- Opening vent and actuator repairs in Maidenhead
- Roof lantern replacement in Maidenhead
Glazing bar and capping repairs near Maidenhead
More about glazing bar and capping repairs · All roof lantern repairs in Maidenhead