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Powys · LD3

Flat roof junction and flashing repairs in Brecon

Dealing with a leak where the roof meets the lantern in Brecon (LD3)? We re-make the membrane, trims and flashing where the flat roof meets the lantern kerb, with a fixed price agreed in writing first.

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In Brecon, as everywhere, the junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos and we'll tell you what we think has failed.

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
  • Splits, blisters or lifted edges in the roof covering by the kerb
  • Ponding on the roof next to the lantern

Common causes we find

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 Brecon

Wind-driven rain is the real test of a roof lantern, and the wetter west sees plenty of it. Leaks that appear only in a storm from one direction usually point to the cappings or eaves on that face — a useful clue when you send us photos.

Brecon is around 40 miles from Newtown, and both are within our Powys coverage.

We also cover nearby Tredegar (13 miles), Merthyr Tydfil (14 miles), Ebbw Vale (14 miles).

Guide prices for flat roof junction and flashing repairs in Brecon

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?

In Wales, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010 (as applied in Wales), so we set out the route in writing first. 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 Brecon: questions

How do I get a price for flat roof junction and flashing repairs in Brecon?

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

Which places near Brecon do you cover?

As well as Brecon, we cover nearby Tredegar, Merthyr Tydfil, Ebbw Vale, Aberdare and the rest of Powys.

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 Brecon

Flat roof junction and flashing repairs near Brecon

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

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