Porthmadog sits squarely in our Gwynedd coverage area for flat rooflights & skylights — which means fast made-to-measure quotes, kerbside delivery for trade and DIY orders, and installation slots with our own teams.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
Like much of Gwynedd, Porthmadog features slate-built terraces and Snowdonia farmhouses — exposure ratings and slate-grey frames are popular. It's the kind of work our surveyors and fitting teams handle week in, week out across the Wales region.
You get the same product either way — thermally broken aluminium, self-clean and solar-control glass options, made to the millimetre. The only choice is who fits it: your builder with our documentation, or our own nationwide teams.
Coverage takes in Porthmadog, Bangor, Caernarfon and Pwllheli and every corner of Gwynedd. Surveys and quotes are free, with a response within 1 working hour on every enquiry.
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
Lanterns add height, presence and all-direction light — right for big kitchen-diners. Flat rooflights are quieter: flush, minimal, perfect for hallways, bathrooms, smaller rooms and strict modern aesthetics. Many projects use both.
A small one — 3 to 5 degrees of fall so water sheds rather than ponds. It's built into the kerb or the unit itself and is invisible from inside the room.
A structurally rated unit with thick laminated glass engineered for foot traffic — it turns a flat roof or terrace into usable floor while lighting the room below. Each one is load-calculated for its span.
Yes — electric opening versions with rain sensors are available for ventilation and, in the right configuration, for roof-access duty. Fixed units remain the slimmest and most economical.
We do. Porthmadog and the surrounding Gwynedd towns are core territory for both our installation teams and our supply-only delivery routes.
For Porthmadog: 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