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I have already talked about the issue of airtightness designs in Swiss standards at the Buildair Conference in 2015. What are the challenges we are facing two years later, regarding airtightness in Switzerland? And which of the issues in this context could be of interest for other countries...

Based on the results of the FLiB e.V. research project „Evaluation of leakages in airtight layers – Recommendations for action for construction professionals”, testing methods in building practice for the detection, analysis, and evaluation of leakages are put up for discussion. One of the FLiB working groups has taken on the task of testing...

Airtightness/air permeability are inseparable from leakages and their detection, categorization, or evaluation. The diverse contexts due to the main construction methods, structures, materials used, individual conditions on site for each building, and the perspectives of the different disciplines regarding airtightness, make it hard to take quick...

As part of an airtightness test, you not only have to determine the air change rate and/or air permeability, but must also search for leakages. Extensive leakages must be documented. However, there are no regulations as to the method of leakage detection or the instruments that might be used. In comparison with traditional...

The pressure differential at the building envelope results from wind pressure and thermal lift. European and German standards include in the calculation of corresponding infiltration the parameters wind speed, temperature differential, and the wind pressure coefficient from building inflow and outflow. This long-term measurement is...

What is the status quo of airtight building in Germany? Are we well on our way or still far from the target? What about measuring practice in Germany? Should we concentrate on the documentation of measurement results or is it more important to exert a positive influence on the building process overall? Which requirements and targets...

During the construction of a building, decentralized ventilation systems were installed. The presentation shows the preparation of the building with sealing bladders by InVENTer and analyses a series of pressure differential measurements. The effectiveness of the ventilation system is documented wit CO2 measurements...

Over the past years, the industry has launched a great number of products facilitating the airtight installation of sanitary fixtures in the airtight building envelope. However, the pre-wall mounting racks of cisterns remain a “key point” for assessing the airtightness of pre-walls. As part of the rehabilitation of an indoor swimming pool, “airtight”...

In an air traffic control tower, conditions for thermal comfort are crucial as the task of air traffic control requires high level of attention and vigilance. Comfortable conditions must be guaranteed all the time especially during extreme periods. Therefore, the HVAC system of a control tower is always composed by two, possibly three, identical...

Many ventilation systems do not work efficiently, because their airflow rates have not been correctly adjusted and due to leakages of the ventilation ducts and individual elements. Different measuring devices are used to evaluate and adjust the flow rates, to conduct airtightness tests with differential pressure measurements of ventilation...