Atlas built its reputation on one number: 40mm. That's the external sightline of its ridge, the slimmest of the major lantern systems, and the reason an Atlas roof reads as glass first and frame barely at all.
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We supply and fit Atlas aluminium lanterns UK-wide, from compact two-pane designs to large multi-hip roofs, in the full colour and glazing range.
The Atlas system pairs ultra-slim external cappings with an internally clean, clutter-free frame — no chunky internal booms or visible fixings. Thermal performance comes from a fully broken aluminium profile achieving U-values down to 1.0 W/m²K with the right glass, and the system is engineered for low pitches, working at 20 degrees where many lanterns need more. Sizes run from neat 1m × 1.5m designs to statement roofs over 6m long, each fabricated to order. We install Atlas lanterns with our own teams or supply direct for your builder to fit.
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The external ridge sightline is 40mm and the hips match it — to put that in context, some budget systems run double that. From inside the room the bars all but vanish against the sky.
Atlas works from a 20-degree pitch, lower than most competing systems. That keeps the lantern's overall height down, which helps with proportion on single-storey extensions and with permitted-development height limits.
Yes — slimness hasn't cost performance. The fully thermally broken profile with argon-filled solar units reaches U-values around 1.0 W/m²K, ahead of Building Regulations requirements.
Anything from roughly 750mm × 750mm up past 6 metres in length. Every lantern is fabricated to your exact external kerb dimensions rather than forced to a stock size.
Yes — supply-only Atlas orders ship UK-wide with full fitting documentation, and installed projects are handled end to end by our own teams.
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