Mumford & Wood, the specialist premium manufacturer of high performance timber windows, french doorsets and entrance doors can claim the exceptionally low U-value of 1.4W/m2k for single or double, fully glazed doors in their iconic 'Conservation' range of period-style products. This measurement is well within the new Part L Building Regulations, October 2010, specification which requires a minimum U-value of 1.8W/m2k for glazed and panelled timber doors.
Casement and sliding sashes in the 'Conservation' range are fully compliant with the new legislation already The company's standard casement has a BSI rating of B, with an overall frame U-value of 1.4W/m2k, while the ECO alternative specification casements and sashes already satisfy the 2016 energy and carbon reduction improvement targets.
