Low-permeance materials in building envelopes

  1. (PDF, 560 KB)
  2. Get@NRC: Low-permeance materials in building envelopes (Opens in a new window)
DOIResolve DOI: http://doi.org/10.4224/20326842
AuthorSearch for: ; Search for:
Series titleConstruction Technology Update; no. 41
Physical description6 p.
SubjectAir and vapour barriers; Building envelope
AbstractThe 1990 National Building Code (NBC) included limitations on the location of materials with low water vapour permeance used as air barriers that many people in the construction industry found to be overly restrictive. As a result of research at IRC, the 1995 NBC includes revised provisions that are more general (i.e. that apply to low-permeance materials used for any function) but less restrictive. This CTU reviews the general issue of the possible harmful effects of inappropriately placed low-permeance materials, gives results of the research on which the revised provisions are based and summarizes the provisions.
Publication date
PublisherInstitute for Research in Construction. National Research Council Canada
Translation of
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NoteAussi disponible en français : Matériaux de faible perméance dans les enveloppes de bâtiment
Peer reviewedNo
NRC number10211
NPARC number20326842
Export citationExport as RIS
Report a correctionReport a correction
Record identifier5592f67e-c3e2-49f9-881b-ed7f4a1a0a23
Record created2012-07-18
Record modified2016-08-04
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)