To supplement the excellent energy efficiency of our SIP building systems, Sipframe now offer superb 'high performance' and 'passive' composite aluminium/wood windows featuring tilt & turn opening and double/triple glazing. These superb quality windows demonstrate German engineering at its very best and are available with a huge range of external colours and a choice of internal wood frame. U-values ranging from 1.2 down to 0.79 W/m2K are available. Custom built to the architects design and available for individual dwellings, multi-storey residential and commercial buildings. For the developer we also offer UPVC 'six chamber' tilt & turn windows with steel re-enforcement bars built-in and a U-value of 1.3 W/m2K |