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...

The overall buildings leakage results from the sum of the individual contribution of its components. Quantifying this contribution would be of major importance for building designers that intend to improve building enclosures for airtightness optimization. Typically, building components airtightness is tested in laboratory but several examples...

For several years, multifunctional tapes have increasingly been used for the airtight installation of windows in new buildings or renovation projects. The adhesive tapes are wrapped around the window on three or four sides. After the installation of the window, the tape expands and closes the joints between window and reveal...

To describe the effectiveness of the thermal anemometer device in assisting airtightness testers to evaluate leakage zones, and specific leakages. There are two main aspects: While the building is pressurised to 50Pa use is made of internal doorways to close off each room to make a 'zone', and an airspeed reading is taken...

The information about uncertainly is essential to correct interpretation of any measurement. Therefore, several authors investigated the reproducibility and repeatability of airtightness measurement during the last years. The experiments were carried out in real buildings of different size and in actual climatic conditions which complicates the comparison...

Part of the research project “Evaluation of leakages in airtight layers – Recommendations for action for construction professionals”, was visiting an object, where air leakages in the roof construction were identified as the cause for moisture damage in the roof structure. The latter was not back-ventilated and was characterized...

The purpose of the article is to introduce the condition of airtightness measurement market of large buildings in the Baltic states and in some European countries. There are also considered national building norms of envelope airtightness and measured values. Based on the measurement results of large buildings (more than 4,000 m3 volume according...