Homeowners and builders in Radyr come to us for korniche roof lanterns for a simple reason: honest supply-only prices, made-to-measure fabrication and installation available right across Cardiff.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
The Cardiff market is defined by Victorian terraces and bay-fronted semis where side-return and rear extensions make lanterns a staple — and our Radyr installs reflect that, with specifications matched to the property rather than pulled off a shelf.
Specification doesn't change with postcode: thermally broken frames, 28mm argon-filled glazing, marine-grade powder coating and a 10-year guarantee, whether you buy supply-only for your own builder or book our installation teams.
Our teams cover Radyr alongside Whitchurch (Cardiff), Cardiff and Penarth and the rest of Cardiff — surveys are free, quotes carry no obligation, and we aim for a response within 1 working hour.
Yes — supply-only Korniche orders are dispatched UK-wide with assembly instructions, and our team is on the phone if your builder has questions on the day.
The joint engineering. Korniche components machine together so precisely that the lantern assembles without silicone, external clips or cover caps — which is why installers love it and why the finished lines look so clean.
The frame itself can be assembled on the kerb in under 30 minutes by a competent installer; a full fit including glazing and flashing is comfortably a one-day job. Manufacture lead time is typically one to two weeks.
Yes — the system is fully thermally broken with no metal-to-metal path from outside to inside, and paired with argon-filled units it achieves U-values that comfortably satisfy Building Regulations for extensions.
We do. Radyr and the surrounding Cardiff towns are core territory for both our installation teams and our supply-only delivery routes.
For Radyr: same-day made-to-measure quotes, standard sizes delivering in around 7–10 working days, and installation slots booked to suit once the survey's done.
Send the form and we’ll come back with honest prices — supply-only or installed — with a response within 1 working hour.
Prefer to talk? Call 0800 088 6248 or WhatsApp · sales@lantern-roof.com