Each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos from Rawtenstall (BB4) 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
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 Rawtenstall
Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.
We cover Rawtenstall as part of Lancashire, about 18 miles from Preston.
If you're just outside Rawtenstall, we also cover Accrington (5 miles), Bury (7 miles), Burnley (7 miles).
How much should it cost?
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?
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?
- 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 Rawtenstall: questions
Do you cover Rawtenstall?
Yes. We cover Rawtenstall, including the BB4 postcode area, as part of Lancashire. 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.
Can you repair a lantern someone else installed in Rawtenstall?
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 Rawtenstall
- Eaves beam and gutter repairs in Rawtenstall
- Upstand and kerb repairs in Rawtenstall
- Cracked lantern glass replacement in Rawtenstall
- Condensation diagnosis and fixes in Rawtenstall
- Aluminium roof lantern repairs in Rawtenstall
- Commercial roof lantern repairs in Rawtenstall
Glazing bar and capping repairs near Rawtenstall
More about glazing bar and capping repairs · All roof lantern repairs in Rawtenstall