Building permeability test by pressurization test (blower door) with issuance of watertightness certificate according to UNE-EN 13829: 2002 and UNE-EN ISO 9972: 2019
Building permeability test by pressurization test (blower door) with issuance of watertightness certificate according to UNE-EN 13829: 2002 and UNE-EN ISO 9972: 2019