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 the hygrothermal performance of cross-laminated timber wall assemblies in 12 Canadian cities belonging to several climate regions and zones and for two cladding and ventilation types. Water ingress in the wall...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-03-01
|
| Series: | Forests |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1999-4907/14/4/718 |
| _version_ | 1797605469105160192 |
|---|---|
| author | Maurice Defo Lin Wang Michael A. Lacasse Travis V. Moore |
| author_facet | Maurice Defo Lin Wang Michael A. Lacasse Travis V. Moore |
| author_sort | Maurice Defo |
| collection | DOAJ |
| description | A study was realized to assess the effects of historical and projected future climates on the hygrothermal performance of cross-laminated timber wall assemblies in 12 Canadian cities belonging to several climate regions and zones and for two cladding and ventilation types. Water ingress in the wall assembly was supposed to be 1% wind-driven rain (WDR), and the airflow rate in the drainage cavity was calculated using local climate data. The hygrothermal simulation results showed that under the assumption of no deficiencies allowing wind-driven rain to enter into the wall (perfect wall), there is no risk of mold growth in the future for both claddings, either vented or ventilated. Under the assumption of high moisture loads (1% WDR), the mold growth risk could increase significantly in all climate regions and cities considered. However, in those cities located in the Cordillera and Prairie regions, the increase was not found to be problematic as the maximum mold growth remained under the acceptable level, whereas for cities located in coastal and southeastern regions, the increase in mold growth risk could be considerable. The impacts of cladding and ventilation types on the relative performance of the walls varied with city location. |
| first_indexed | 2024-03-11T05:01:32Z |
| format | Article |
| id | doaj.art-dbcc732ea26741e6abec11f91fb0f1c8 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-11T05:01:32Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-dbcc732ea26741e6abec11f91fb0f1c82023-11-17T19:16:53ZengMDPI AGForests1999-49072023-03-0114471810.3390/f14040718Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic RegionsMaurice Defo0Lin Wang1Michael A. Lacasse2Travis V. Moore3National Research Council Canada, Construction Research Centre, Ottawa, ON K1A 0R6, CanadaNational Research Council Canada, Construction Research Centre, Ottawa, ON K1A 0R6, CanadaNational Research Council Canada, Construction Research Centre, Ottawa, ON K1A 0R6, CanadaNational Research Council Canada, Construction Research Centre, Ottawa, ON K1A 0R6, CanadaA study was realized to assess the effects of historical and projected future climates on the hygrothermal performance of cross-laminated timber wall assemblies in 12 Canadian cities belonging to several climate regions and zones and for two cladding and ventilation types. Water ingress in the wall assembly was supposed to be 1% wind-driven rain (WDR), and the airflow rate in the drainage cavity was calculated using local climate data. The hygrothermal simulation results showed that under the assumption of no deficiencies allowing wind-driven rain to enter into the wall (perfect wall), there is no risk of mold growth in the future for both claddings, either vented or ventilated. Under the assumption of high moisture loads (1% WDR), the mold growth risk could increase significantly in all climate regions and cities considered. However, in those cities located in the Cordillera and Prairie regions, the increase was not found to be problematic as the maximum mold growth remained under the acceptable level, whereas for cities located in coastal and southeastern regions, the increase in mold growth risk could be considerable. The impacts of cladding and ventilation types on the relative performance of the walls varied with city location.https://www.mdpi.com/1999-4907/14/4/718cross-laminated timberwall assemblyclimatic regionsclimate changeventilation ratemold growth |
| spellingShingle | Maurice Defo Lin Wang Michael A. Lacasse Travis V. Moore Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions Forests cross-laminated timber wall assembly climatic regions climate change ventilation rate mold growth |
| title | Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions |
| title_full | Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions |
| title_fullStr | Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions |
| title_full_unstemmed | Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions |
| title_short | Evaluation of Moisture Performance of Tall Wood Building Envelope under Climate Change in Different Canadian Climatic Regions |
| title_sort | evaluation of moisture performance of tall wood building envelope under climate change in different canadian climatic regions |
| topic | cross-laminated timber wall assembly climatic regions climate change ventilation rate mold growth |
| url | https://www.mdpi.com/1999-4907/14/4/718 |
| work_keys_str_mv | AT mauricedefo evaluationofmoistureperformanceoftallwoodbuildingenvelopeunderclimatechangeindifferentcanadianclimaticregions AT linwang evaluationofmoistureperformanceoftallwoodbuildingenvelopeunderclimatechangeindifferentcanadianclimaticregions AT michaelalacasse evaluationofmoistureperformanceoftallwoodbuildingenvelopeunderclimatechangeindifferentcanadianclimaticregions AT travisvmoore evaluationofmoistureperformanceoftallwoodbuildingenvelopeunderclimatechangeindifferentcanadianclimaticregions |