Homeowners and builders in Welwyn Garden City come to us for flat roof lanterns for a simple reason: honest supply-only prices, made-to-measure fabrication and installation available right across Hertfordshire.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
Hertfordshire property here means garden-city housing, 1930s semis and a fast-moving extension market across the commuter towns. That local context shapes what we recommend in Welwyn Garden City — from glass specification to frame colour — before a single quote is written.
Frames are thermally broken aluminium, glazing is 28mm argon-filled with self-clean and solar options, and everything is made to measure. Buy supply-only with kerbside delivery, or have our fitters handle the lot under a written workmanship guarantee.
From Welwyn Garden City we also serve St Albans, Hemel Hempstead and Stevenage and the wider county — so if you're comparing quotes anywhere in Hertfordshire, ours is free, fast and without obligation.
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
The lantern doesn't, but the junction detail differs: EPDM wraps the kerb, GRP laminates onto it, felt is torch-dressed. We supply the right drawing for each.
Almost always the junction, not the lantern — short upstands, membrane finished under rather than over the kerb, or missing seals. Build the kerb right and dress the membrane right, and the assembly is dependable for decades.
A timber kerb at least 150mm above the finished roof surface, built to the lantern's external footprint. We issue exact dimensions at order so it's ready before the lantern arrives.
On installed projects, we coordinate it: the roofer dresses the membrane over the kerb, we bed and seal the lantern onto it. Supply-only orders include junction drawings for EPDM, GRP and felt so your roofer details it correctly.
We do. Welwyn Garden City and the surrounding Hertfordshire towns are core territory for both our installation teams and our supply-only delivery routes.
For Welwyn Garden City: 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