An attic condensation: ventilation model

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TypeTechnical Report
Physical description7 p.
SubjectBuilding envelope; Insulation
AbstractMost codes and guidelines for house construction specify ventilation openings for attic or roof spaces to control condensation. The values specified appear to be based on traditional practice and are regarded by many as being without experimental or analytical justification. This paper proposes a simple psychrometric model that could be used as a basis for roof space vent opening requirements. It was developed during the course of investigation of an attic condensation problem in flat wood- frame roofs of a low-rise row-housing condominium project in Canada.
Publication date
PublisherNational Research Council Canada. Division of Building Research
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC numberNRCC 54563
NPARC number20374134
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Record identifier910abf17-3fc7-4c45-82c3-34199a79c723
Record created2012-07-23
Record modified2017-07-05
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