Moisture content of indoor air and structures in buildings with vapour-permeable envelopes.

Simonson C J, Salonvaara M H, Ojanen T
building envelope, vapour barrier
Year:
2001
Bibliographic info:
in: USA, Atlanta, ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.), 2001, ISBN 1-883413-96-6, proceedings of a conference held Sheraton Sand Key Resort, Clearwater Beach, Florida, USA, 2-7 December 2001, CD ROM form

Field measurements and numerical simulation were used to measure moisture transfer to the building envelope for a building with and without a vapour barrier. The results indicated that the vapour resistance of the barrier can be significantly below that provided by polyethylene, even in cold climates. States that moisture transfer from indoor air to the envelope can be seen as improving the indoor air quality by moderating the indoor humidity.

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