Recent studies show that 80 million Europeans live in homes that are damp . Damp homes have an unhealthy indoor climate which almost doubles the risk of developing asthma9.
According to the Global Initiative for Asthma, 30.7 million Europeans had asthma in 2004 .
However, despite the general concern, 65 % of all Europeans dry clothes indoors at least once a week, and only 28 % air out more than once a day during winter, which is needed to obtain optimal indoor air quality. Nevertheless, 78 % of all Europeans express above average satisfaction with the air quality in their current home.
Source: Healthy Homes Barometer 2015, An annual study of European citizens’ attitudes and behaviour regarding
home comfort, energy consumption and environmental impact, The Healthy Homes Barometer is accompanied academically by Prof. Dr. Dr. h. c. Bernd Wegener, Humboldt University Berlin.
 Grün, G. & Urlaub, S.: “Towards an identification of European indoor environment’s impact on health and performance”, White Paper, (2014), Frauenhofer-Institut für Bauphysik.
 Mendell, M. J., Mirer, A. G., Cheung, K., Tong, M. Douwes, J.: “Respiratory and allergic health effects of dampness, mould and dampness-related agents: a review of the epidemiologic evidence.” Environmental Health Perspectives, p. 119 (2011).
 Global Initiative for Asthma, “Global Burden of Asthma”, 2004. 11E.g.: Hägerhed-Engman, L., Bornehag, C. G., Sundell, J.: “How valid are parents’ questionnaire responses regarding building characteristics. Mouldy odour and signs of moisture problems in Swedish homes?”, Scandinavian Journal of Public Health, p. 35 (2007). And: Foster, R. G.: “Body Clocks, Light, Sleep and Health”, Daylight & Architecture, p. 15 (spring 2011).