What is one of the main purposes of building preparation methods in air tightness testing?

Achieving pressure uniformity is a critical aspect of building preparation methods in airtightness testing. This process ensures that the test environment is consistent and that pressure variations do not skew the results of the assessment. When testing for airtightness, it is vital to have a uniform pressure distribution throughout the building to accurately identify any air leaks and measure the building's overall airtightness. If there are significant pressure differences between various areas of the building, it could lead to false readings and an inaccurate understanding of the building’s envelope performance.

Pressure uniformity enables testers to effectively identify and quantify air leakage paths, supporting a more reliable and meaningful assessment of the building's airtightness. This ensures that the performance of the building can be accurately evaluated and compared against required standards, which is essential for energy efficiency and comfort. Making certain that the testing environment is uniform is thus a foundational element of the airtightness testing process.