Cornwall homeowners and trades use us for kitchen extension roof lanterns because the offer is simple — honest online prices on standard sizes, same-day made-to-measure quotes, and installation available everywhere in the county.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
Property across Cornwall runs to granite cottages and coastal homes where marine-grade aluminium and storm-rated glazing are essential specs — context that genuinely changes what we specify, from glazing coatings to frame colours and fixing details.
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.
Standard sizes below — made to measure quoted same day. Installation available nationwide if you’d rather we fit it.
Thermally broken aluminium · self-clean & solar glass options · 7–10 working days
Thermally broken aluminium · self-clean & solar glass options · 7–10 working days
Thermally broken aluminium · self-clean & solar glass options · 7–10 working days
It needs to — ducting routes across the flat-roof void are the most common clash. Send the kitchen plan and we'll position the lantern and kerb clear of the duct run before anything is ordered.
Once the slab is in and dimensions are real. Fabrication then runs while walls go up, and the lantern lands the week your roofer has the kerb ready — no site storage, no programme gap.
Over the zone you'll actually occupy — the island or the dining table — not the geometric centre of the roof. We'll mark the position on your plan, checking it clears extraction ducting and any steels in the void.
A footprint around one-fifth to one-quarter of the room area is the sweet spot. For a common 4m × 6m extension that points to roughly 1500 × 3000 — dramatic light without turning summer lunchtimes tropical.
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