PAVLA MCGRATH AND MICHEL J. PERREAULT
ABSTRACT
Following a study of the 60 year old Canada Life Building in Toronto, Ontario, it was determined that the lack of insulation and relatively low humidity levels of interior air kept the stone cladding warm and dry. The growing need for modern environmental conditions inside the existing building led to increasing the humidification level. To preserve the exterior wall and cladding for another 60 years the dynamic buffer zone (DBZ) was designed, introducing an intentionally controlled environment space between the controlled interior environment and the variable environment outside. Further benefits of the DBZ were derived by integrating the DBZ with the building’s HVAC systems.
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