| Download | - View accepted manuscript: A Moisture index approach to characterizing climates for moisture management of building envelopes (PDF, 276 KiB)
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| Author | Search for: Cornick, S. M.1; Search for: Dalgliesh, W. A. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Conference | The 9th Conference on Building Science Technology, 27 February 2003, Vancouver, British Columbia |
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| Subject | moisture index; driving rain; moisture reference years; climate classification; Moisture performance |
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| Abstract | Premature failures of building envelopes in some North American locations appear to be climate related. An IRC-led research consortium called MEWS (Moisture Management of Exterior Wall Systems) developed a method using hygrothermal modelling to identify locations where walls may experience moisture related problems. The method classifies climates by a Moisture Index (MI) based on wetting and drying potentials. Responses of various wall systems to the climatic inputs of Moisture Reference Years (MRY, selected according to their MI) were examined for seven North American locations spanning the MI range of climate severity. The study linked the likelihood of failure to construction deficiencies allowing excessive amounts of rain into the wall, and generally confirmed a direct relationship between hygrothermal response and MI.Application of MI and MRY did, however, reveal anomalies for some climates. MI can post warning flags, but hygrothermal modelling is required to explore potential problems in depth. |
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| Publication date | 2003-02-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 45704
NRC-IRC-14974 |
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| NPARC number | 20378565 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e4a056e6-73ea-47da-89cb-6ea52f433575 |
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| Record created | 2012-07-24 |
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| Record modified | 2021-01-05 |
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