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InfiniLANTERN

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

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

At Arkay Windows we provide one of the slimmest roof lantern designs available on the current market with allows for increased light transmittance to fill a space with light. Perfect for rooms in the centre of a building that don’t have windows or that are slightly darker than others, the roof lantern helps inject brightness and vibrance to lift the look and feel.

Without using bars, which standard roof lanterns include, the InfiniLANTERN® has a frameless feel and add a touch of elegance to a project. Able to withstand harsh conditions, the roof light is also extremely thermally efficient, keeping warm air inside and reducing carbon emissions.

The sleek glass to glass joins give the InfiniLANTERN® the frameless design that makes them so renowned as well as a stunning focal point, with an attractive modern finish. They provide excellent functionality as well as an attractive aesthetic.

The InfiniLANTERN® roof lantern is low maintenance and is designed with self-cleaning and solar reflective glass. Whilst allowing increased natural light, they are intelligently designed to keep the suns UV rays to a minimum.

Stratus Lantern Roof – Modern Framed Lantern for Flat Roofs

The Stratus Lantern Roof is Arkay’s contemporary aluminium lantern system, designed to maximise daylight and style. Featuring slimline profiles and thermally broken aluminium rafters, Stratus allows light to flood into your space while delivering modern aesthetics and reliable year-round performance.

Available in 2-way, 3-way, and Contemporary designs, Stratus gives you flexibility to suit any layout—ideal for both large and compact openings.

Key Features

  • Discrete internal structure with clean, minimalist visuals

  • Thermal break technology for improved energy performance

  • Fixed 20° pitch for sleek lines and effective water drainage

  • Glazing thickness: 24mm

  • Sizes up to: 3000mm x 6000mm (3-way design)

  • Finish options: Anthracite Grey (RAL 7016) or White (RAL 9016) exterior, white interior as standard

Performance

  • U-value: From 1.0 W/m²K (dependent on glass unit used)

  • Lightweight yet rigid structure for easy installation

  • Compatible with flat roof systems with suggested upstand: 100mm (W) x 150mm (H)

Designed for modern living, the Stratus Lantern is a stylish and cost-effective choice for homeowners, contractors, and specifiers alike.

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.

With its fully thermally broken profile, the InfiniLANTERN delivers a U-value from just 1.0 W/m²K, making it one of the most energy-efficient aluminium lanterns on the market.

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 2000mm (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

Rapid Installation Design

Engineered for efficiency on-site, the InfiniLANTERN is quick to assemble and fit, saving time for installers and reducing disruption.

Structurally Bonded Glazing

Robust, high-performance glazing is bonded directly to the frame, ensuring durability, weather resistance, and clean aesthetics.

Thermally Broken Aluminium Profile

Fully thermally broken for excellent insulation, helping to achieve a U-value from just 1.0 W/m²K for energy efficiency and comfort.

Flush-Glazed External Design

The external finish is sleek and flush, delivering a crisp, modern look that integrates seamlessly with flat roof systems.

Frameless Internal Finish

A completely frameless view from inside ensures unobstructed sightlines and maximises natural light, creating a bright, open space.

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 (Larger Available on Request)
MAXIMUM WIDTH 2000 mm (Larger Available on Request)
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

FAQ

What is the maximum size available for the InfiniLANTERN?

The InfiniLANTERN is available up to 3000mm in length and 2000mm in width as standard, with larger bespoke sizes available on request.

Is the InfiniLANTERN suitable for new builds and retrofits?

Yes, the InfiniLANTERN is ideal for both new build projects and refurbishments, thanks to its thermally broken aluminium profile and flexible sizing.

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?

Yes, it is designed with a fixed 40° pitch for optimal drainage and clean external lines, making it both practical and visually striking.

How energy efficient is the InfiniLANTERN?

With a U-value from just 1.0 W/m²K, the InfiniLANTERN offers outstanding thermal performance, helping to retain heat and reduce energy costs year-round

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High-security aluminium entrance door with PAS 24 compliance.

InfiniLIGHT

Sleek flat rooflights maximising natural daylight and minimalist aesthetics.

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Find Us

36-38 Caxton Way Watford Business Park Watford WD18 8QZ

Contact Us

01923 803923

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