At Bereco, our timber windows and doors are designed with optimum energy efficiency in mind. Our standard double glazed windows achieve a whole window U-value of 1.2 which means they successfully meet the notional target of the new Part L, allowing you more flexibility with your build design for SAP calculations. Whereas, our triple glazing goes even further achieving whole window U-values as low as 0.8.
Plus, our timber windows and doors are naturally renewable, carbon neutral and made from only sustainably sourced FSC 100% certified softwood or hardwood.