scope:

This standard contains a procedure for use when examining the final coat of a coating system applied to concrete or masonry surfaces to determine the number of visible pinholes. It also contains a pinhole frequency classification scheme that is used to determine the acceptability of the applied coating. Nonmandatory Note 9.1 describes additional assessment procedures that may be specified when it is necessary to determine whether pinholes extend to the substrate.

Aggregated-filled finishes, stippled finishes, finishes that are intentionally porous, craters and surface imperfections other than pinholes cannot be assessed by this method.