The junction where the flat roof covering meets the lantern kerb is a weak point on many extensions. Send photos from Haverfordwest (SA61) and we'll tell you which it is — with the price agreed in writing before any work.
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
Why it happens
Cracked GRP
Fibreglass roofs can crack at the kerb corner where movement concentrates.
Missing trims
Without a trim or flashing to protect the top edge, water gets in behind the membrane.
Covering Haverfordwest 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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
Haverfordwest is around 29 miles from Carmarthen, and both are within our Dyfed coverage.
If you're just outside Haverfordwest, we also cover Milford Haven (7 miles), Pembroke Dock (8 miles), Cardigan (23 miles).
Guide prices for flat roof junction and flashing repairs in Haverfordwest
Most flat roof junction and flashing repairs jobs come in between £245 and £695 ex VAT (£294–£834 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?
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?
- Send photosWhatsApp or upload a few photos and tell us when it leaks.
- Guide priceWe reply with a guide price and whether a visit is needed.
- Fixed price in writingYou approve the price and the date before anything starts.
- Repair and testWe fix what's failed, water-test where it matters, and send photos.
Flat roof junction and flashing repairs in Haverfordwest: questions
Do you cover Haverfordwest?
Yes. We cover Haverfordwest, including the SA61 postcode area, as part of Dyfed. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Do you need to visit to price flat roof junction and flashing 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.
Do you repair the whole flat roof?
We repair the area around the lantern. If the wider roof is failing we'll tell you and can quote, but we won't push a new roof if a local repair will do.
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 Haverfordwest
- Roof lantern resealing in Haverfordwest
- Eaves beam and gutter repairs in Haverfordwest
- Misted glass unit replacement in Haverfordwest
- Cracked lantern glass replacement in Haverfordwest
- Slipped glass panel repairs in Haverfordwest
- Flat rooflight and skylight repairs in Haverfordwest
Flat roof junction and flashing repairs near Haverfordwest
More about flat roof junction and flashing repairs · All roof lantern repairs in Haverfordwest