airtightness testing

Airtightness testing measures how well a building prevents air from leaking through its envelope—walls, ceiling, and floors. Using specialized equipment, a fan pressurizes or depressurizes the space, and sensors detect any air escaping or entering. This helps identify gaps, leaks, or weak points that can reduce energy efficiency and affect comfort. The test provides a building’s air change rate, ensuring it meets safety and sustainability standards. Overall, airtightness testing is a crucial step in verifying a building’s quality, energy performance, and indoor air integrity.