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Enjoy the sky above with a sleek new frameless lantern room light with full thermal break.

Arkay Windows offers one of the slimmest roof lantern designs on the market, maximising natural light to brighten darker interior spaces. The InfiniLANTERN® features a frameless, glass-to-glass design without bulky bars, creating a sleek, modern focal point.

Built for durability, it performs well in harsh conditions while maintaining excellent thermal efficiency to retain heat and reduce carbon emissions. Designed for convenience, it includes self-cleaning, solar-reflective glass that limits UV exposure while enhancing light flow, delivering both strong performance and refined aesthetics.

InfiniLANTERN® – Frameless Lantern Rooflight

Enjoy the sky above with unobstructed views and exceptional thermal efficiency.

InfiniLANTERN is Arkay’s sleek, modern aluminium roof lantern with a minimalist, frameless internal finish and a structurally bonded, flush-glazed external appearance. Designed to let in maximum daylight while delivering outstanding performance, this lantern rooflight is the ideal centrepiece for flat roof extensions, kitchens, and living spaces.

Key Features

  • Frameless internal appearance for uninterrupted views of the sky

  • Flush-glazed external finish for clean, contemporary lines

  • Fully thermally broken aluminium construction

  • Fixed 40° pitch for enhanced natural drainage and aesthetics

  • Structurally bonded glazing for strength and weather resistance

  • Designed for rapid, installer-friendly fitting

  • Available in pyramid or elongated lantern shapes

  • Maximum sizes: 3000mm (L) x 1500 mm(W), 400kg panel weight

Performance

  • U-value: From 1.0 W/m²K

  • Air permeability: Class 4

  • Water tightness: Class 9A

  • Wind resistance: Class A4

Whether you’re specifying for a residential renovation or a high-end architectural project, the InfiniLANTERN brings refined aesthetics and excellent thermal control to every design.

A Closer Look at the Design, Performance and Finishing Touches

Technical Specification

Specification

PROFILE HEIGHT 82 mm
GLAZING THICKNESS 28mm-50mm
GLAZING METHOD Structurally Bonded
FIXED FALL 40 Degrees

Size Limits

MAXIMUM LENGTH 3000 mm
MAXIMUM WIDTH 1500 mm
MAXIMUM WEIGHT 400 kg

Performance

U-VALUE From 1.0 W/m²K
AIR PERMEABILITY Class 4
WATER TIGHTNESS Class 9A
WIND RESISTANCE Class A4

Download brochure

Download brochure

What is the maximum size available for the InfiniLANTERN?

Is the InfiniLANTERN suitable for new builds and retrofits?

What type of glazing does the InfiniLANTERN use?

It uses structurally bonded double or triple glazing with thicknesses from 28mm to 50mm, ensuring strength, weather resistance, and thermal efficiency.

Does the InfiniLANTERN require a specific roof pitch?

How energy efficient is the InfiniLANTERN?

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