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

Gwent · CF83

Flat roof junction and flashing repairs in Caerphilly

If you're in Caerphilly and dealing with a leak where the roof meets the lantern, we can help. We re-make the membrane, trims and flashing where the flat roof meets the lantern kerb, and confirm the fixed price in writing before we start.

Get a guide priceCall 0800 088 6248

We carry out flat roof junction and flashing repairs in Caerphilly and across the CF83 area. The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions.

Newly trimmed flat roof junction and flashing tape around a roof lantern kerb

What you might be seeing

  • Leak near the lantern but not from the frame
  • Missing or loose edge trims and flashings
  • Ponding on the roof next to the lantern

What usually causes it?

Unbonded membrane

EPDM or single-ply that has come away from the kerb lets water run behind it.

Missing trims

Without a trim or flashing to protect the top edge, water gets in behind the membrane.

Roof lanterns in Caerphilly

Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.

We cover Caerphilly as part of Gwent, about 9 miles from Newport, Gwent.

We also cover nearby Risca (6 miles), Pontypridd (6 miles), Blackwood (6 miles).

How much should it cost?

Guide price, per lantern£245–£695 ex VAT£294–£834 inc VAT

Guide price for flat roof junction and flashing repairs: £245–£695 ex VAT (£294–£834 inc 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.

Flat roof junction and flashing repairs in Caerphilly: questions

Can you repair a lantern someone else installed in Caerphilly?

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 Caerphilly do you cover?

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

What does a junction repair cost?

Usually £245–£695 ex VAT, confirmed in writing before work starts.

Can you repair a GRP roof without it showing?

Repairs are colour-matched as closely as possible, but new topcoat next to weathered topcoat can look slightly different at first.

Other lantern repairs in Caerphilly

Flat roof junction and flashing repairs near Caerphilly

More about flat roof junction and flashing repairs · All roof lantern repairs in Caerphilly

Call freeGuide price