All our window sections feature a polyamide thermal barrier to enhance thermal efficiency achieving whole window 'U' values as low as 1.3w/m²k, which qualifies for Code 4 of the Sustainable Homes Directive.
Phoenix Windows are certificated by the British Fenestration Rating Council as installers of rated windows for both PVCu and aluminum frames.
Our energy saving A rated windows in internally beaded uPVC or Aluminium are up to 50% more energy efficient than standard K glass double glazing.