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Myths About Building Envelopes.

pdf icon Myths About Building Envelopes. (1260 K)
Persily, A. K.

ASHRAE Journal, Vol. 41, No. 3, 39-47, March 1999.


Department of Energy, Washington, DC


building envelope; commercial buildings; institutions; airtightness; air quality


It is often assumed that commercial and institutional buildings are fairly airtight and that envelope air leakage does not have a significant impact on energy consumption and indoor air quality in these buildings. Furthermore, it is asumed that more recently constructed buildings are tighter than older buildings. However, very little data is available on the airtightness of building envelopes in commercial and institutional buildings.