The ventilation of insulated roofs

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DOIResolve DOI:
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TypeTechnical Report
Series titleBuilding Practice Note; no. 57
Physical description14 p.
SubjectRoofing; ventilated roof spaces; moisture content; roof ventilators; air moisture transfer; insulation ( activity); vapour barriers; Wind loads; Air and vapour barriers; Couvertures
AbstractAlthough roof space ventilation may not be very effective in cold weather, it is required as the outside air warms up, to dry out moisture that may have accumulated in the roof space. This Note stresses the importance of reducing the movement of moisture from the living areas to the roof space and of ventilating the latter by means of vents distributed between the upper and lower parts of the roof to take advantage of both wind action and stack action.
Publication date
PublisherNational Research Council Canada. Division of Building Research
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AffiliationNational Research Council Canada
Peer reviewedNo
NRC numberNRC-IRC-3697
NPARC number20375156
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Record identifier33c9cd5e-982f-4beb-84e9-50002ce26c1f
Record created2012-07-23
Record modified2017-11-16
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