ROOFLANTERNREPAIRS.co.uk
0800 088 6248 Get a guide price

South Glamorgan · CF10

Roof lantern replacement in Cardiff

Roof lantern replacement in Cardiff (CF10): we replace lanterns that are beyond economic repair, checking the kerb and re-making the junction. Start with a few photos by WhatsApp or the form and we'll come back with a guide price.

Get a guide priceCall 0800 088 6248

In Cardiff, as everywhere, we're repair-first, but some lanterns are past it: distorted frames, rot through the main bars, or most of the glass failed. Send photos and we'll tell you what we think has failed.

Two installers lowering a new aluminium roof lantern onto a prepared timber kerb

Signs you need roof lantern replacement

  • Distorted or sagging frame
  • Repeated leaks after previous repairs
  • Single-glazed or very poor thermal performance

Common causes we find

Age

Older lanterns can't be brought up to modern performance with repairs alone.

Rot

Timber lanterns left unmaintained.

Roof lanterns in Cardiff

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.

Close by, we also cover Penarth (3 miles), Caerphilly (7 miles), Barry (7 miles).

How much should it cost?

Guide price, supplied and fitted£1,995–£4,995 ex VAT£2,394–£5,994 inc VAT

Guide price for roof lantern replacement: £1,995–£4,995 ex VAT (£2,394–£5,994 inc VAT), supplied and fitted. 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 Wales?

Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.

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.

Roof lantern replacement in Cardiff: questions

How do I get a price for roof lantern replacement in Cardiff?

Send a few photos of the lantern and the problem, with your Cardiff postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.

Do you need to visit to price roof lantern replacement?

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.

How much does a replacement roof lantern cost?

Standard sizes typically £1,995–£4,995 ex VAT supplied and fitted; bespoke sizes and kerb rebuilds are priced on survey. You get the fixed price in writing first.

Can the new lantern use the existing opening?

Usually, if the kerb is sound and the size suits a standard or made-to-measure lantern.

Other lantern repairs in Cardiff

Roof lantern replacement near Cardiff

More about roof lantern replacement · All roof lantern repairs in Cardiff

Call freeGuide price