Halo has launched its latest addition to the System10 range – the TwinSash – which is said to achieve the lowest Uvalues and sound reduction of any PVCu window on the market today.<br> <br> The TwinSash's U-value performance ranges from 1.2 down to an industry-leading 0.38, Halo claims, depending upon the type of glazing, spacer and gas used. The 1.2 U-value performance is achieved using air filled double-glazed units with float glass and aluminium spacer, enabling specifiers to meet current Building Regulations while achieving value for money, the company says. Triple-glazed krypton-filled units and foam filled sections not only enable the TwinSash to provide a U-value of 0.38 – which the company's believes is significantly lower than any other PVCu window currently on market – but it also reportedly provides substantial noise reduction of 50dB (decibels).<br> <br> Such a high degree of energy efficiency is ideal for PassivHaus applications and those projects seeking to meet and beat level six of the Code for Sustainable Homes or striving for carbon negative construction, Halo says.<br> <br> www.halo-uk.com