TY - JOUR TI - Impact of preparation procedures on results of airtightness tests AU - Nowak, Katarzyna AU - Nowak-Dzieszko, Katarzyna TI - Impact of preparation procedures on results of airtightness tests AB - Requirements connected with the designing of low-energy and passive buildings impose an obligation to conduct airtightness tests during the building process and after the completion of building works. Proper building preparation is required before initiating an airtightness test. In case of commercial buildings with complicated HVAC systems, the proper preparation may appear to be very complicated and can unfavorable affect the tests results. On the example of tests conducted in the low-energy office buildings in Wrocław, the authors describe the problems met during airtightness tests. VL - 2014 IS - Civil Engineering Issue 3-B (8) 2014 PY - 2014 SN - 0011-4561 C1 - 2353-737X SP - 329 EP - 334 DO - 10.4467/2353737XCT.14.253.3341 UR - https://ejournals.eu/en/journal/czasopismo-techniczne/article/impact-of-preparation-procedures-on-results-of-airtightness-tests KW - air leakage KW - fan pressurisation method KW - airtightness of the buildings KW - n50 coefficient KW - low-energy buildings