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. 2015 Mar 4;12(3):2837–2869. doi: 10.3390/ijerph120302837

Table 2.

Projected PM2.5 infiltration and air tightness of buildings in Nordic countries.

Decade Building Tightness a ACH50 PM2.5 Infiltration References
2000 5 59% Hänninen et al. 2004, 2011, 2013 [58,59,62],
Kearney et al. 2014 [65],
Gens et al., 2014 [66],
Zou, 2010 [67],
2020 3 52% EC 2012 [63],
2050 1 30% Erhorn-Kluttig et al., 2009 [64].
2080 1 24%
2100 1 21%

a average ACH50 in new buildings.