83% Reduction in Air Leakage

The cost to heat or cool buildings is significantly impacted by the air leakage of the building envelopment. Traditionally, this performance measurement gets far less focus than isolated thermal resistance. To examine the air leakage performance, BamCore had the exterior Prime Wall and a comparable 2×6 conventionally framed wall tested at two levels of air pressure at an ISO accredited independent lab. Without the addition of any exterior wall wrap material, in low-pressure testing that represents calm wind and weather conditions, the Prime Wall had a 67% reduction in air leakage compared to the conventionally framed 2×6 wall. However, even more significant, was the Prime Wall’s 83% reduction in air leakage compared to the conventional wall, when tested at a higher level of air pressure that represents stormy wind and weather conditions.