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Greater London · SW1P

Glazing bar and capping repairs in Westminster

Got a lifted capping or perished gasket in Westminster? We re-seat or replace lifted cappings, perished gaskets and loose glazing bar fixings. Send photos for a free guide price — you'll get a fixed price in writing before any work starts.

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We carry out glazing bar and capping repairs in Westminster and across the SW1P area. Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets.

Roof lantern glazing bar with the top capping lifted to show the gasket beneath

Is it time for glazing bar and capping repairs?

  • Gasket rubber poking out, cracked or missing
  • Rattling or whistling in wind
  • End caps missing at the bottom of a bar

What usually causes it?

Gasket shrinkage

Rubber gaskets shrink back from the ends over time, leaving a gap at the ridge or eaves.

Damage

Ladders, window cleaning or someone stepping on a lantern can bend a capping or unclip it.

Roof lanterns in Westminster

Even in drier areas, one heavy downpour with blocked eaves is enough to overflow a lantern indoors. Clearing the eaves channel is the simplest prevention there is.

Across London, many lanterns sit on rear extensions with access only through the house, so we protect floors and plan the work to keep time indoors to a minimum. Parking and any permits are factored into the quote.

Close by, we also cover Pimlico (1 mile), Chelsea (2 miles), Battersea (2 miles).

Guide prices for glazing bar and capping repairs in Westminster

Guide price, per lantern£165–£395 ex VAT£198–£474 inc VAT

Most glazing bar and capping repairs jobs come in between £165 and £395 ex VAT (£198–£474 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?

  1. Send photosWhatsApp or upload a few photos and tell us when it leaks.
  2. Guide priceWe reply with a guide price and whether a visit is needed.
  3. Fixed price in writingYou approve the price and the date before anything starts.
  4. Repair and testWe fix what's failed, water-test where it matters, and send photos.

Glazing bar and capping repairs in Westminster: questions

Can you repair a lantern someone else installed in Westminster?

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.

Which places near Westminster do you cover?

As well as Westminster, we cover nearby Pimlico, Chelsea, Battersea, Brixton and the rest of Greater London.

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 Westminster

Glazing bar and capping repairs near Westminster

More about glazing bar and capping repairs · All roof lantern repairs in Westminster

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