The PCV-U window solution is extruded in a recyclable RAU-FIPRO® fibre composite material with a coextruded outer layer, and has been chosen due to its ability to offer U-Values as low as 0.68 W/m²K

A total of 150 windows have been fitted at twelve new bungalows on the development site in the town of Millport on the Isle of Cumbrae, ranging in sizes from 0.6m² to 5.2m².