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While many reports are available on the airtightness of detached dwellings, little information is available on multifamily housing. In this study, airtightness characteristics of 42 row dwellings from nine housing complexes were obtained by depressurization [CGSB “Determination of Airtightness of Buildings by the Fan Depressurization Method” (CAN2-149.10)]. For 24 of the houses, airtightness was also determined with party wall leakage offset by simultaneous depressurization of dwellings adjacent to the test unit. The houses were built between 1965 and 1982 using wood-frame exterior wall construction; airtightness characteristics of exterior envelopes were found to be similar to those of detached dwellings of the same age and envelope construction. Airtightness characteristics of party walls were found to be similar to those of the exterior envelope.
air leakage, airtightness, effective leakage area, fan pressurization, row housing
Associate professor, The University of Calgary, Calgary, Alberta