Problem Solving Forum


July 8 - July 14, 2013

For coatings with a high-solids content (95% 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?


Selected Answers

From Steve Brunner of Indepenent on October 16, 2013:

Most of the problems seen in high solids coatin ...read more

Most of the problems seen in high solids coatings are a result of application. The coatings are designed with flow additives to aide in application but good techniques are needed. Gone are the days of adding additional solvent to help. These high solid coatings can orange peel when air pressure is too high, the gun is too close to the surface or, with airless spraying, when the pressure is too high. These fixes are somewhat easy to resolve. With pinholing of the coating during application, heated airlines may be used to make the coating more fluid and fill in these voids. One should verify with the tech data sheet the temperature that is acceptable. 

From vikraman govindraj of Rigmetals L.L.C on October 14, 2013:
For high-solid and high-dry-film thickness coating ...read more

From Bonny Njimogu of Construction Specialist Services Ltd. on July 10, 2013:
Good surface preparation has been a key factor tha ...read more

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Tagged categories: Coating Materials; High solid coatings; Holidays; Paint defects