Yes. As part of a SAP calculation for new buildings Pilkington Spacia™, in an appropriate frame, can meet or improve upon the limit window U-value or 2.0 W/m²K. Pilkington Spacia™ can also be used for replacement windows that require a WER (Window Energy Rating) of band C or above or a window U-value of, at worse, 1.6 W/m²K. Certain buildings that are restricted in their glazing options have special consideration for energy efficiency. They can benefit from using Pilkington Spacia™ where traditional glazing is inappropriate and single glazing does not provide the thermal comfort of a modern home.