Problem Solving Forum
February 21 - February 24, 2017
For coatings with a high-solids content (95 percent or more), what kinds of defects, such as holidays or micropores, are possible or likely to occur in the applied film? How can these be prevented or remedied?
Jerry Trevino of Protective Liner Systems on
March 7, 2017:
Concrete outgassing creates holidays; minimize out ...read more Concrete outgassing creates holidays; minimize outgassing and it will reduce holidays and pinholes.
Joseph Travers of C&JTRAVERS Industrial Painting on
March 5, 2017:
I would be interested in the long answer, Dennis. ...read more I would be interested in the long answer, Dennis. Why would this defect occur with solvent-free, brush-applied coatings?
Dennis Harris of International Paint on
March 2, 2017:
Short answer, pinholes are generally problematic w ...read more Short answer, pinholes are generally problematic with high solids coatings. I've found that applying a mist coat and cross-spray application usually cuts the pinholes down tremendously.