TAAC is the TightVent Airtightness Associations Committee (https://tightvent.eu/taac/taac), launched in September 2012 by the TightVent Europe platform (https://tightvent.eu), with the primary goal to bring together national associations and experts in order to promote reliable testing and reporting procedures. At present the participants (https://tightvent.eu/taac/taac-participants) are from Belgium, Czech Republic, Estonia, France, Germany, Hungary, Ireland, Latvia, Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, UK and the US. The scope of TAAC includes various aspects such as: airtightness requirements in the countries involved; competent tester schemes in the countries involved; applicable standards and guidelines for testing; collection of relevant guidance and training documents; share of knowledge and experience; and information on ongoing research work in the field of building and ductwork airtightness. In case you are interested to join this initiative, please write an email to: info@tightvent.eu