A Building Pressurisation Test, also known as a building pressurization or depressurisation test, is a procedure used to evaluate the airtightness and pressure differentials within a building or specific areas of the building. It involves manipulating the pressure inside the building to assess its ability to resist air infiltration or exfiltration.
During a Building Pressurisation Test, the building is pressurised or depressurised by adjusting the airflow using fans or blowers. The goal is to create a specific pressure differential between the inside and outside of the building, typically measured in Pascals (Pa) or inches of water gauge (in. wg).
The test measures the airflow rate required to maintain the desired pressure differential, which provides valuable information about the airtightness and air leakage of the building envelope. The airflow measurements can be obtained using instruments such as a blower door system or other airflow measurement devices.
Building Pressurisation Tests help identify areas of air leakage, evaluate the effectiveness of air barrier systems, and determine the overall airtightness of the building. They are particularly useful for assessing energy efficiency, indoor air quality, and the potential for air infiltration or exfiltration that may impact the building’s performance.
The results of a Building Pressurisation Test can be used to guide air sealing efforts, prioritize areas for improvement, and optimise energy efficiency. By reducing air leakage and improving airtightness, building owners and professionals can enhance energy performance, minimize heating and cooling demands, and improve indoor comfort and air quality.
It’s important to note that Building Pressurisation Tests should be conducted by trained professionals following established protocols and safety guidelines. The test conditions and procedures may vary depending on the specific objectives and requirements of the building assessment.