Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions

A study was realized to assess the effects of historical and projected future climates on hygrothermal performance cross-laminated timber wall assemblies in 12 Canadian cities belonging several climate regions zones for two cladding ventilation types. Water ingress assembly supposed be 1% wind-driven rain (WDR), airflow rate drainage cavity calculated using local data. The simulation results showed that under assumption no deficiencies allowing enter into (perfect wall), there is risk mold growth both claddings, either vented or ventilated. Under high moisture loads (1% WDR), could increase significantly all considered. However, those located Cordillera Prairie regions, not found problematic as maximum remained acceptable level, whereas coastal southeastern considerable. impacts types relative walls varied with city location.