Onsite Static Air and Water Testing
Air leakage and water penetration testing takes place on project sites to check the quality of workmanship of an installation. It is usually a requirement of the project specification.
To test air leakage, an airtight chamber is constructed on the inside face of the area being assessed. Air leakage is measured at different static pressures up to 600 Pa, ensuring that the facade satisfies the test standard.
Water is applied to the external face of the facade at a rate of 3.4l/m/min using a spray matrix. At the same time, the facade is subjected to various static pressures up to 600 Pa, ensuring that the facade remains watertight.
CWCT section 5 (air leakage) and section 6 (water penetration testing) is carried out to facade systems consisting of curtain walling, windows and doors. Further guidance on when this testing should be carried out can be found at the CWCT website – see technical note 41.