Pressure equalization in rainscreen wall systems

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Series titleConstruction Technology Update; no. 17
Physical description6 p.
SubjectRainscreen walls
AbstractIf the pressure in the air chamber behind the rainscreen is less than the pressure in front of it, rain is actually driven into the air chamber, which is, of course, undesirable. Through pressure equalization, this pressure difference is eliminated. A rainscreen wall has vent holes through which air can flow quickly to achieve pressure equalization. Two types of pressures -- static and dynamic -- have to be considered when calculating the size of the vent holes. Also, the pressure in an air chamber is not constant across the facade of a wall. That needs to be considered in their placement.
Publication date
PublisherInstitute for Research in Construction. National Research Council Canada
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NoteAussi disponible en français : Équilibrage des pressions dans les murs à écran pare-pluie
Peer reviewedNo
NRC number9314
NPARC number20325388
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Record identifierdfd381a2-df13-4f88-8ee8-7d0773756a36
Record created2012-07-18
Record modified2016-05-09
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