BS EN 12865:2001 Hygrothermal performance of building components and building elements - Determination of the resistance of external wall systems to driving rain under pulsating air pressure
This standard specifies a general method for assessing the driving rain resistance of wall systems by determining the water tightness of wall systems or part of wall systems under pulsating air pressure.
BS EN 12865:2001 history
2001BS EN 12865:2001 Hygrothermal performance of building components and building elements - Determination of the resistance of external wall systems to driving rain under pulsating air pressure