A building that is too tight is a bad thing if the space hasn't been designed for that level of air tightness.
The popular saying "build tight, ventilate right" applies here and works both ways. Building airtight without proper ventilation could cause issues with indoor air quality in the space. On the flip side, a leaky building with proper ventilation could cause the mechanical ventilation and heat recovery (MVHR) system to not work as it is designed.
AeroBarrier can achieve any desired air tightness level, subsequently removing the guesswork and ensuring the spaces are as air tight as they have been designed for.