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Gwent · NP11

Roof lantern leak repairs in Risca

For roof lantern leak repairs in Risca, the job is simple to describe: we trace where the water gets in and repair the seal, capping, ridge, eaves or kerb that has failed. Photos first, a guide price back, then a written fixed price.

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In Risca, as everywhere, a roof lantern leak is almost always a failed seal, a lifted capping, blocked eaves drainage or a problem where the kerb meets the flat roof — not a failed lantern. Send photos and we'll tell you what we think has failed.

Rainwater running down an internal glazing bar of a roof lantern above a kitchen

Is it time for roof lantern leak repairs?

  • Drips from a glazing bar or the eaves beam when it rains
  • Water running down the inside face of the glass
  • A leak that only appears in wind-driven rain from one direction

Common causes we find

Failed silicone or glazing tape

UV and thermal movement break down the seal between capping, gasket and glass. Once a gap opens, water tracks along the bar and drops at the lowest point.

The kerb or roof junction

If the flat roof membrane isn't dressed high enough up the kerb, or the kerb has no fall, water sits against the joint and finds its way in under the lantern.

Covering Risca and nearby

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 Risca as part of Gwent, about 5 miles from Newport, Gwent.

If you're just outside Risca, we also cover Newport, Gwent (5 miles), Cwmbran (5 miles), Caerphilly (6 miles).

What should you expect to pay in Risca?

Guide price, per lantern£195–£595 ex VAT£234–£714 inc VAT

Most roof lantern leak repairs jobs come in between £195 and £595 ex VAT (£234–£714 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 Wales?

Most lantern repairs in Wales need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 (as applied in Wales) apply and we confirm how the work will be signed off before we start. 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 leak repairs in Risca: questions

Do you need to visit to price roof lantern leak 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.

Which places near Risca do you cover?

As well as Risca, we cover nearby Newport, Gwent, Cwmbran, Caerphilly, Blackwood and the rest of Gwent.

Can you fix the leak in the rain?

We can make the lantern safe in wet weather, but sealants and tapes need a dry, clean surface to bond, so permanent repairs are done in a dry window.

Will you show me what was wrong?

Yes. We photograph the failed detail and the finished repair and send them to you with the invoice.

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