Items tagged with ROOFS Files

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Roofs: Watertightness under pulsating air pressure (NT BUILD 421)


  • This standard defines a method to be used for water-tightness testing under pulsating air pressure of building elements and components to be fitted in roofs and supplied in the form of completely assembled and finished units.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.