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South Glamorgan · CF64

Roof lantern replacement in Penarth

Roof lantern replacement in Penarth (CF64): 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.

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In Penarth, 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

  • Several misted or cracked units
  • Distorted or sagging frame
  • Rotten timber throughout

What usually causes it?

Structural damage

Impact or movement distorts the frame.

Rot

Timber lanterns left unmaintained.

Roof lanterns in Penarth

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.

Penarth is around 3 miles from Cardiff, and both are within our South Glamorgan coverage.

We also cover nearby Cardiff (3 miles), Barry (5 miles), Caerphilly (10 miles).

Guide prices for roof lantern replacement in Penarth

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

Most roof lantern replacement jobs come in between £1,995 and £4,995 ex VAT (£2,394–£5,994 including 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 Penarth: questions

Can you repair a lantern someone else installed in Penarth?

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 Penarth do you cover?

As well as Penarth, we cover nearby Cardiff, Barry, Caerphilly, Cowbridge and the rest of South Glamorgan.

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.

Will you tell me if repair is enough?

Yes. We'd rather do a repair that works than sell a lantern you don't need.

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