Air permeability tests are designed to measure the integrity of a modular building from an air tightness perspective using pressure differentiation techniques. Air leakage typically occurs through gaps and holes in the building fabric and this uncontrolled ventilation affects the building in various ways. By reducing air leakage, buildings can be heated more efficiently to conserve energy, save money and lower carbon dioxide emissions.
Here at MPH we look closely at the environmental impact of our modular buildings and at design stage we not only consider the most cost effective solution to initially supply a building but also take in to account the overall running costs during its lifespan.
To ensure current Building Regulation compliance, buildings under 500sq metres total useful floor area do not require an air permeability test. As we are continually looking for ways to improve our building performance however, we recently independently tested both our new and refurbished buildings below this size criteria for air leakage and achieved results up to 70% better than the requirements of Building Regulations Part L2a 2010.
Further testing is planned to enable us to apply a generic calculation that will ultimately provide us with a system type approval for Building Control.