When the architect's drawing shows a glass roof with almost no visible structure, this is the category that delivers it. Slimline lanterns push frame sightlines to the practical minimum so the opening reads as pure sky.
Free, no-obligation quotes · response within 1 working hour · supply-only or fully installed
We supply slimline aluminium lanterns with ridge sightlines from 40mm, structural glazing details and minimal internal framing — supply-only or installed.
Slimline performance comes from doing more with the aluminium: higher-grade alloys, structural bonding that lets the glass itself stiffen the roof, and concealed fixings throughout. External cappings shrink to 40–47mm on the ridge and hips, and internal frames lose the bulky booms of standard systems. The trade-off is precision — these lanterns demand accurate kerbs and careful glazing — which is why our slimline installs are handled by senior fitting teams, and supply-only orders include a pre-delivery dimension check with your builder.
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
Choose your county for local pricing, coverage and installation details:
On current systems, around 40mm at the ridge externally. Claims much below that usually measure a different part of the frame — we'll always quote like-for-like ridge and hip dimensions so you can compare honestly.
No — the slimness comes from structural bonding and better alloys, not thinner-for-the-sake-of-it metal. Each lantern is engineered for its span and site wind loading.
Tighter tolerances, structural glazing and higher-spec profiles all add manufacturing cost, and installation needs more care. It's the premium tier of the lantern market and priced accordingly.
Very much so — they're a favourite on architect-designed projects. We work from your drawings, check kerb dimensions before fabrication and coordinate delivery with your build programme.
Yes — we'll send comparative section drawings showing our slimline profile against a standard lantern at the same scale, so the difference is concrete before you commit.
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