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Bedfordshire · LU6

Glazing bar and capping repairs in Dunstable

If you're in Dunstable and dealing with a lifted capping or perished gasket, we can help. We re-seat or replace lifted cappings, perished gaskets and loose glazing bar fixings, and confirm the fixed price in writing before we start.

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Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos from Dunstable (LU6) and we'll tell you which it is — with the price agreed in writing before any work.

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

Is it time for glazing bar and capping repairs?

  • A capping visibly higher than its neighbours
  • Gasket rubber poking out, cracked or missing
  • Rattling or whistling in wind

Why it happens

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 Dunstable

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.

From Bedford to Dunstable is roughly 17 miles — all part of the Bedfordshire area we cover.

Neighbouring places we cover include Luton (5 miles), Leighton Buzzard (6 miles), Harpenden (9 miles).

Guide prices for glazing bar and capping repairs in Dunstable

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

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?

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?

  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 Dunstable: questions

Do you need to visit to price glazing bar and capping repairs?

Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.

Can you repair a lantern someone else installed in Dunstable?

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.

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 Dunstable

Glazing bar and capping repairs near Dunstable

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

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