Airtight construction

Although thermal insulation levels in construction are improving, the proportion of energy lost to air leakage is still significant. In some cases around half of all heat losses are due to air leakage across the building fabric. Polarwall is inherently airtight, making it the ideal material of choice. Airtightness for masonry construction is normally achieved by the application of wet plaster to the internal face of the walls. The construction industry has spent years moving away from these expensive wet trades, this is where Polarwall can offer a real advantage. The current Building Regulations require buildings to achieve a figure of 10m3/hr/m2 @ 50pa. A Polarwall structure can provide a figure of 1.96m3/hr/m2 @ 50pa, this even exceeds the demanding Swedish design benchmark of 2.88m3/hr/m2 @ 50pa, which is relevant as airtightness requirements are set to become more stringent in each successive review of the Building Regulations.

For more information on Airtight construction talk to Polarwall