Air leakage in buildings

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Series titleCanadian Building Digest; no. CBD-23
Physical description5 p.
Subjectair barriers; air leakages; air infiltration; air exfiltration; air tightness; windows; doors; surface condensation; Air and vapour barriers; Moisture performance; pare-air
AbstractHeating load and building relative humidity in winter are affected by over-all air infiltration and ventilation rates. Since windows and doors usually represent the major source of air leakage in buildings, significant reductions of overall air infiltration are achieved principally by increasing the air-tightness of these components. Reduction of the air infiltration rate through windows, however, will not reduce exfiltration through other cracks and porous condensation. To overcome condensation problems resulting from exfiltration, cracks and porous construction must be eliminated on the warm side of the structure. In multi- story buildings air flow between floors should be restricted to reduce pressure differences resulting from chimney action.
Publication date
PublisherNational Research Council Canada. Division of Building Research
AffiliationNational Research Council Canada
NoteAussi disponible en français : Fuites d'air dans les bâtiments
Peer reviewedNo
NRC numberNRC-IRC-1240
NPARC number20327437
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Record identifier02cfa29b-5a20-4870-8046-7379074bcb8e
Record created2012-07-18
Record modified2017-04-27
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