CAN/CGSB 1.501-M89 ✓ Most Recent [ Withdrawn ]

This method is for use in determining the water vapour permeance of organic coatings when applied to gypsum wallboard.

This test method may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this test method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any existing applicable regulatory requirements prior to its use.

Time-dated standard
Referenced in the National Building Code of Canada
Referenced in the National Housing Code
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