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Berkshire · SL4

Glazing bar and capping repairs in Windsor

We cover Windsor and the wider Berkshire area for glazing bar and capping repairs. In short, we re-seat or replace lifted cappings, perished gaskets and loose glazing bar fixings — and you know the price before any work begins.

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We carry out glazing bar and capping repairs in Windsor and across the SL4 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

Signs you need glazing bar and capping repairs

  • A capping visibly higher than its neighbours
  • Gasket rubber poking out, cracked or missing
  • Water running down one glazing bar inside

Why it happens

Gasket shrinkage

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

Fixings working loose

Screws and clips that hold the capping relax with thermal movement, so the clamp on the glass weakens.

Roof lanterns in Windsor

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.

Windsor is around 16 miles from Reading, and both are within our Berkshire coverage.

Close by, we also cover Slough (2 miles), Egham (4 miles), Staines (5 miles).

What should you expect to pay in Windsor?

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

Guide price for glazing bar and capping repairs: £165–£395 ex VAT (£198–£474 inc 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?

Most lantern repairs in England need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 apply and we confirm how the work will be signed off before we start. 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 Windsor: questions

Can you repair a lantern someone else installed in Windsor?

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 Windsor do you cover?

As well as Windsor, we cover nearby Slough, Egham, Staines, Maidenhead and the rest of Berkshire.

How much do capping and gasket repairs cost?

Usually £165–£395 ex VAT per lantern depending on how many bars are affected, confirmed in writing before work starts.

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.

Other lantern repairs in Windsor

Glazing bar and capping repairs near Windsor

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

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