Moisture performance characteristics of OSB and spruce plywood exterior sheathing products

Tuomo Ojanen, Jarkko Ahonen, Carey Simonson

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    4 Citations (Scopus)


    Plywood and OSB (Oriented Strand Board) are both made of timber and glue and have good structural strength. OSB is a relatively new product that has lower requirements for the timber raw material than plywood. Quite often these products are equated without considering their moisture properties under as exterior sheathing conditions- low temperatures and high humidities in cold climates - or the effect of these properties on the overall moisture performance of structures. A representative amount of samples were used to study the moisture properties and moisture performance characteristics of European OSB and plywood products and a comparison to one North American OSB and one plywood product was done. The results show clearly the moisture performance differences between OSB and plywood products. The products are not interchangeable in all applications and special attention is needed to find the best application in different climate and moisture load conditions.
    Original languageEnglish
    Title of host publicationResearch in Building Physics and Building Engineering
    Subtitle of host publicationProceedings of the 3rd International Building Physics Conference
    EditorsPaul Fazio
    PublisherTaylor & Francis
    ISBN (Print)0-415-41675-2, 978-0-415-41675-7
    Publication statusPublished - 2006
    MoE publication typeA4 Article in a conference publication
    Event3rd International Building Physics Conference, IBPC 2006 - Montreal, Canada
    Duration: 27 Aug 200631 Aug 2006
    Conference number: 3


    Conference3rd International Building Physics Conference, IBPC 2006
    Abbreviated titleIBPC3


    • OSB
    • plywood
    • moisture performance
    • drying efficiency
    • sorption
    • dimensions


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