Architect | Workshop | Jansteel


Introduced for the first time by Jansen at BAU 2013, the Janisol HI system sets new standards in thermal insulation. Triple glazing windows achieve an excellent coefficient of thermal transmittance of up to Uw 0.69 W/m2K (for fixed lights) and up to Uw 0.8 W/m2K (for windows). Thanks to the high-tech insulating bars made from glass fibre-reinforced polyurethane, the new window system also achieves excellent static values and its performance has been highly confirmed in numerous tests (air/water/wind). Delivery starting on 01 July 2013

Materials / surface finishes

Hot-dip galvanised steel strip, suitable for powder-coating or stove-enamelling

Window and opening types

Single- and double-vent windows

With and without fixed side panels, skylights or in the glazing/facade

Side-hung, turn-tilt, bottom-hung and double-vent windows


Concealed fittings

Surfaced-mounted fittings

Special technical features

Installation depth 90 mm (vents), 80mm (fixed lights)

Very good static values, narrow face widths

Infill element thickness up to 67/57 mm (triple glazing)

Vent heights up to 2.8 m

Vent weights up to 180 kg

Test certificates

CE marking in accordance with product standard EN 14351-1

Coefficient of thermal transmittance Uw > 0.69 W/m2K for fixed lights

Coefficient of thermal transmittance Uw > 0.8 W/m2K for windows

Airborne sound insulation Rw 46 db

Tightness against heavy rain class 9A (600Pa)

Air permeability class 4 (600 Pa)

Resistance to wind load class C4 (1600 Pa)

Thermal break in accordance with EN 14024