Walltite polyurethane spray foam insulation system has been specified for a newbuild detached-bungalow project in Snettisham, Norfolk. Finer Living designed the property to the Canadian Super E standard to create a neutral carbon structure. Walltite CL 100 spray-applied polyurethane foam insulation was applied between the roof rafters. The PU spray foam insulation was also used as part of a composite wall structure, over a 340m² wall area, to provide an airtight envelope for the property. Airtightness tests provided a result of 1.69m³/hr/m² and the walls achieved a U-value of 0.17. Finer Living was appointed main contractor on the project and director Gregg Etches explains: "The Walltite polyurethane spray foam insulation system was specified primarily for its airtightness. The initial liquid state allows the foam to seal every joint, consequently stopping any heat loss or air leakage within the property. By using this product I am able to reach at least level four or five of the Code for Sustainable Homes."