Rehabilitation and the building enclosure

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ConferenceProceedings, Second Canadian Building Congress: 15 October 1979, Toronto, Ontario, Canada
Pages5358; # of pages: 6
Subjectexternal envelopes; restoration (renewal); air leakages; rain penetration; Moisture performance; enveloppe (batiment); restauration; penetration de l' air; penetration de la pluie
AbstractThe building envelope provides the separation between inside and outside environments and controls flows of mass and energy. Rehabilitation of buildings usually involves new interior conditions that will normally impose a more severe service environment for the building envelope than existed in the original building. The walls and roofs have to be designed to maintain the separation of the two dissimilar environments without deterioration and this should take precedence over restoration considerations. The paper deals with the upgrading of walls and roofs to increase airtightness, reduce rain penetration and conserve energy use. It discusses the effect of insulation and the location of insulation on the envelope performance and the types of wall and roof modification that are possible. Exterior cladding and insulation on the exterior of walls, controlled buffer spaces for walls, and exposed insulation in the protected membrane mode for roofs is considered.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number18298
NPARC number20331641
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Record identifierafd60da1-ea42-4540-b4b4-6f6c5534e9dc
Record created2012-07-18
Record modified2016-05-09
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