Sapa Building Systems has introduced a new casement window to its Dualframe Si range that will help specifiers looking to achieve BREEAM “excellent” or levels three and above of the Code for Sustainable Homes

The Dualframe 75mm Si window incorporates polyamide thermal breaks, gaskets and seals to help it deliver U-values of 1.4W/m2K with double-glazed units and 1W/m2K with triple glazing.

The unit achieves the highest class performance for water tightness, air permeability and wind resistance. All weather, mechanical and security testing has been carried out at BSI.

Different finishes can be specified to the internal and external faces.

Sapa Building Systems