Glass plays an incredibly important role in the building code targets. Ordinary glass used even in the best window frame, will always result in poor insulation. Achieving the right amount of natural light without compromising your design and the amount of energy (heating and cooling) lost through its surface is only achievable by using both quality frames and quality glass! The products you should be considering to help you achieve energy and insulation targets is Viridian high performance double glazing, LightBridge™ or performance single glazing, SmartGlass™.