If you're planning roof lanterns in Dolgellau, you're in the right place. We supply made-to-measure lanterns with delivery across Gwynedd, and our installation teams fit throughout the area — so you can buy supply-only or have the whole job handled.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
Around Dolgellau and the wider county, housing stock runs to slate-built terraces and Snowdonia farmhouses — exposure ratings and slate-grey frames are popular. We've specified and supplied for exactly these property types across Gwynedd, so recommendations come from real local precedent.
Every lantern is thermally broken aluminium as standard, glazed with 28mm argon-filled units, and available with self-clean and solar-control coatings. Supply-only orders include kerb specifications and fitting documentation; installed projects carry our written workmanship guarantee on top of the 10-year product cover.
Dolgellau, Porthmadog, Pwllheli and Bangor and the rest of Gwynedd all sit inside standard coverage: free surveys, free quotes, and a response within 1 working hour.
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
Most single-lantern installations are completed in a day once the upstand is ready. Larger or multiple-lantern projects typically run one to two days including flashing and internal making good.
Supply-only prices depend on size and glass specification — our online price list covers the standard sizes, and made-to-measure quotes usually come back the same day. Installed prices add the fitting, flashing and making good, and vary with roof access and upstand condition, so we confirm those on a free survey.
A 150mm minimum upstand is the standard requirement. It lifts the lantern clear of standing water on the flat roof and gives the flashing somewhere to dress. If your upstand isn't built yet, we'll supply the exact external kerb dimensions so your builder can form it ready for the lantern.
A correctly installed modern lantern shouldn't leak. Failures almost always trace back to the upstand or flashing rather than the lantern itself, which is why our installation teams dress and seal the junction as part of every fit, and why supply-only orders ship with full fitting instructions.
Yes — Dolgellau is inside our standard Gwynedd coverage. Our fitting teams survey and install throughout the area, and supply-only deliveries run to Dolgellau on dedicated glass transport.
Stocked standard sizes typically deliver to Dolgellau within 7–10 working days; made-to-measure fabrication adds to that, and we confirm the slot when you order so it lands with your build programme.
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