Jansen Arte Windows

Insulated W20 System Lookalike

Jansen Arte Windows

Insulated W20 System Lookalike

The established Loft Style window from Jansen is a near perfect Bauhuas Window design, with minimally steel framing.

The finely proportioned windows are a perfect modern option for Bauhaus windows with an ultra-slimline profile and a thermally broken, insulated frame.

The system was developed by Jansen to the refurbishment and renovation of industrial and loft style buildings as well as listed and heritage projects. However the slim steel windows are often used to give modern architectural projects a dash of style.

Each Arte Window frame is made from a combination of steel profiles with a fibre glass reinforced core to create a thermally broken steel window. The galvanised steel, rolled profiles can then be coated any RAL colour to create the design aesthetic required of the project.

There is a full portfolio of opening options available enabling you to fit these steel casement windows into almost any aperture. They are also be available in a centre pivoting window, to mimic many industrial style steel windows of the past.

Integrated mullions and transoms are easily possible to create a traditional, cross hatched window design that is more in keeping with traditional or heritage projects.

There are a full range of additional extras available for Arte Windows, normally associated with traditional steel windows, such as brass opening limiters and catches.

Frame Sizes

Surrounding Frame 60mm

Fixed Vent Frame 40mm

Profile Depth 60mm  


Side Hung Windows

Double Opening Side Hung Windows

Horizontal Pivoting Window

Bottom Hung (inward opening)

Top Hung (outward opening)

Maximum Sizes

Single side hung vent approx. 800mm wide  x 1600 mm high

Bottom or Top Hung Windows 1600mm wide x 800mm high


Thermal Performance Uw 1.6 W/m2K *

Water Tightness Class 9A (600 Pa)

Air permeability Class 4

Resistance to wind load Class 4 (1,600 Pa)

Sound Insulation until 42 dB


Double Glazed Unit 20-34mm

Maximum glass weight 60kg

Glass Specification

4mm toughened outer / 16mm argon filled gas cavity / 4mm toughened inner with low e coating

Glass Options

Low Iron Glass

Anti-Reflective Glass

Coloured Glass

Laminated Glass

Other Specialist Glazing Options may be available on request

Glazing Bead Options







Contact Us

Showroom Address
The Courtyard Showroom,
Sky House,
Raans Road,
HP6 6JQ,
United Kingdom

Factory Address
Units 8 & 9 Nazeing Glass Works Estate,
Nazeing New Road,
EN10 6SU,
United Kingdom



+44(0)1494 722 880


IQ Metal are at the forefront of bespoke metal work and steel window fabrication. Our state of the art factory and desire to create beautiful products allow us to work on some of the most prestigious architectural projects in the country. We pride ourselves on customer service so please contact us immediately if you have any queries or questions about any of our luxury steel windows and doors.