Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates
The paper is an attempt to answer the question whether the material-optimized roof construction using cross-laminated timber (CLT) is safe in terms of moisture content in the demanding northern costal climates. The proposed roof structure meets the strength requirements. The partition is diffusional...
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ftmdpi:oai:mdpi.com:/2075-5309/10/1/10/ 2023-08-20T04:06:56+02:00 Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates Agnieszka Sadłowska-Sałęga Krzysztof Wąs 2020-01-14 application/pdf https://doi.org/10.3390/buildings10010010 EN eng Multidisciplinary Digital Publishing Institute Building Energy, Physics, Environment, and Systems https://dx.doi.org/10.3390/buildings10010010 https://creativecommons.org/licenses/by/4.0/ Buildings; Volume 10; Issue 1; Pages: 10 CLT moisture condensation critical moisture content diffusively open northern coastal climates hygrothermal calculation Text 2020 ftmdpi https://doi.org/10.3390/buildings10010010 2023-07-31T22:59:55Z The paper is an attempt to answer the question whether the material-optimized roof construction using cross-laminated timber (CLT) is safe in terms of moisture content in the demanding northern costal climates. The proposed roof structure meets the strength requirements. The partition is diffusionally open, which facilitates moisture transport. However, there is a concern whether the applied layer system allows maintaining a safe level of moisture content below critical moisture content (CMC), which has been set at 20%. The article presents the annual hygrothermal calculation of the proposed roof slope for four locations of northern Europe and Greenland characterized by costal or subpolar climate. Four scenarios of indoor air relative humidity were considered: free floating, RHmin = 40%RH, RHmin = 50%, RHmin = 60%. In all cases, the minimum indoor temperature was 20 °C. The analysis was carried out using WUFI®Plus software. The calculation results showed that the moisture content did not exceed 20% in the CLT layer at any of the described locations. However, for the two coldest climates the assumed level of safety has been exceeded in the roof oriented strand board (OSB) sheathing. Text Greenland MDPI Open Access Publishing Greenland Buildings 10 1 10 |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
CLT moisture condensation critical moisture content diffusively open northern coastal climates hygrothermal calculation |
spellingShingle |
CLT moisture condensation critical moisture content diffusively open northern coastal climates hygrothermal calculation Agnieszka Sadłowska-Sałęga Krzysztof Wąs Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
topic_facet |
CLT moisture condensation critical moisture content diffusively open northern coastal climates hygrothermal calculation |
description |
The paper is an attempt to answer the question whether the material-optimized roof construction using cross-laminated timber (CLT) is safe in terms of moisture content in the demanding northern costal climates. The proposed roof structure meets the strength requirements. The partition is diffusionally open, which facilitates moisture transport. However, there is a concern whether the applied layer system allows maintaining a safe level of moisture content below critical moisture content (CMC), which has been set at 20%. The article presents the annual hygrothermal calculation of the proposed roof slope for four locations of northern Europe and Greenland characterized by costal or subpolar climate. Four scenarios of indoor air relative humidity were considered: free floating, RHmin = 40%RH, RHmin = 50%, RHmin = 60%. In all cases, the minimum indoor temperature was 20 °C. The analysis was carried out using WUFI®Plus software. The calculation results showed that the moisture content did not exceed 20% in the CLT layer at any of the described locations. However, for the two coldest climates the assumed level of safety has been exceeded in the roof oriented strand board (OSB) sheathing. |
format |
Text |
author |
Agnieszka Sadłowska-Sałęga Krzysztof Wąs |
author_facet |
Agnieszka Sadłowska-Sałęga Krzysztof Wąs |
author_sort |
Agnieszka Sadłowska-Sałęga |
title |
Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
title_short |
Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
title_full |
Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
title_fullStr |
Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
title_full_unstemmed |
Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates |
title_sort |
risk of moisture in diffusionally open roofs with cross-laminated timber for northern coastal climates |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/buildings10010010 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Buildings; Volume 10; Issue 1; Pages: 10 |
op_relation |
Building Energy, Physics, Environment, and Systems https://dx.doi.org/10.3390/buildings10010010 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/buildings10010010 |
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Buildings |
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10 |
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10 |
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1774718302760730624 |