A large zero carbon development is benefitting from the high performance airtight membrane Wraptite-SA from A Proctor Group, says the acoustic and thermal insulation company.
Housebuilder Hill and Cambridge City Council have created a total of 208 energy efficient dwellings. The development at Clay Farm, Great Kneighton in Cambridge, has been designed to achieve a BREEAM Excellent rating, requiring an airtightness level of less than 1. The A Proctor Group says that its Wraptite-SA was specified by Kingspan Timber Solutions for the project to achieve the required standard.
Wraptite-SA – which, the company states, is the only self-adhering vapour permeable air barrier certified by the BBA – was applied externally to the timber frame panels in continuous pieces.
The use of Wraptite-SA makes a significant contribution to a building’s thermal performance by preventing lateral air movement, A Proctor Group explains.
Initial airtightness results after installation achieved a rating of 0.72, well within the target level of less than 1, A Proctor Group says.www.proctorgroup.com/air-barriers