Abstract
The moisture buffering value (MBV) is considered nowadays an easy way to classify building materials when the purpose is assessing their potential passive contribution to indoor comfort and energy saving. In literature different test methods, and relative MBVs calculated on the basis of these, are found. Hence, a study was conducted to confirm the comparability of results. Eight different plastering mortars and finishing pastes underwent the two most common test methods—the ISO 24353 and the NORDTEST protocol—and the related MBVs were calculated. It was observed that the MBV is different when different test methods are followed, although results are proportional. The values obtained following the NORDTEST method are found always higher that the values obtained following the ISO 24353 and, therefore, it is concluded that MBV is affected by the test procedures and can only be directly compared when the same procedure is used.
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