Aluminium window which uses an innovative, enhanced thermal barrier manufactured from expanded polyurethane (PUR), allowing ultra-low U-values to be achieved. It can be either side hung or top hung to create an awning window.

With a generic Green Guide rating of ‘A’ for use in commercial projects and a life expectancy in excess of 40 years, the PURe® window range is 100% recyclable and has been designed to meet the Passivhaus standard. Tested to PAS24, BS 6375-1, BS 6375-2 and BS 6375-3.

Constructed using mitred corners, joined with crimped or mechanical cleats; alignment chevrons assist in clean, accurate mitres. Integral transoms and mullions are scribed around the outer frames and fixed with either screwports or shearblocks. A proprietary sealant is used on all metal joints. Opening window frames are designed to be inserted directly into the outer frames using friction stays.

Features and benefits:

High performance polyurethane thermal barrier providing U-values as low as 0.73 W/m²K when calculated as a domestic CEN Standard window.
Able to receive double or triple glazing up to 50 mm for maximum thermal and acoustic performance.
Available in an almost unlimited range of colours and finishes both inside and out.
Opening window frames are designed to be inserted directly into the outer frames using friction stays.
Choice of square, chamfered or mix and match beads.
Fully compatible with any Senior door and curtain wall systems.
Thermal barriers: Expanded polyurethane (PUR).
Gaskets: Manufactured in accordance with BS 3734.

U-Value:

Varies depending on type and size of window, average U-Values available are:

- Residential CEN standard (1230 x 1480 mm):

28 mm double glazed unit: 1.23 W/m²K.
44 mm triple glazed unit: 0.75 W/m²K.

- Commercial CEN standard (1230 x 1480 mm):

28 mm double glazed unit: 1.18 W/m²K.
44 mm triple glazed unit: 0.71 W/m²K.

Construction:

Constructed using mitred corners, joined with crimped or mechanical cleats; alignment chevrons assist in clean, accurate mitres. Integral transoms and mullions are scribed around the outer frames and fixed with either screw ports or shear blocks. A proprietary sealant is used on all metal joints in line with good practice. Opening window frames are designed to be inserted directly into the outer frames using butt hinged or tilt and turn mechanisms. Tested to BS 6375-1, BS 6375-2 and BS 6375-3:2009.

SAS PURe® Casement EPD