Praxis qualifies as an airtightness testing laboratory for building quality control
Praxis has qualified as an airtightness testing laboratory for building quality control, an important recognition from the Spanish Ministry of Transport, Mobility and Urban Agenda
Praxis qualifies as an airtightness testing laboratory for building quality control
Praxis has qualified as an airtightness testing laboratory for building quality control, an important recognition from the Spanish Ministry of Transport, Mobility and Urban Agenda, confirming that Praxis is proficient in air leakage testing of buildings to ISO 9972:2019.
The Blower Door test is a widely used method for assessing the airtightness of buildings. This test is crucial for understanding how well a building envelope prevents unwanted air leakage, which directly impacts energy efficiency, indoor air quality, and overall comfort.
Praxis has also taken part in EILA
the inter-laboratory benchmarking program for Blower Door testing in Spain, run by the Instituto de Ciencias de la Construcción Eduardo Torroja (IETcc). As part of the program, Praxis undertook a Blower Door test in an apartment building in Barcelona city, with strict adherence to ISO 9972:2019.
Blower Door test ISO 9972: what is it?
The Blower Door test involves temporarily installing a powerful fan in the frame of an external door of the building. The fan either pressurizes or depressurizes the interior of the building, and sensors measure the rate at which air leaks through the building’s envelope. The test results are typically expressed as the air change rate per hour (ACH) at a specified pressure difference, typically 50 Pascals (Pa). This is known as the n50 value.
ISO 9972 provides a standardized methodology for performing the Blower Door test, ensuring consistency and accuracy across different buildings and testing conditions. This standard outlines the procedures for setting up the test, measuring air leakage, and reporting the results.
Airtightness testing: why is it useful?
Track record
In recent years, Praxis has undertaken blower door testing in hospitals, elderly people’s residences, office buildings, single family homes and multi-residential buildings, totalling 47,044 m2 of floor area..
We accompany our clients on site, providing technical advice and solutions for improving airtightness, for any kind of construction system or building typology.
