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Maximum Overcoating Time

Last updated: July 15, 2019

What Does Maximum Overcoating Time Mean?

Maximum overcoating time is a term used to specify the allowable time period within which overcoating (or the application of an additional layer of paint or coating) should occur. The purpose of the maximum overcoating time is to ensure that adequate intercoat adhesion is achieved between subsequent coating layers. This crucial parameter is usually quoted on product data sheets for various temperatures.

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Corrosionpedia Explains Maximum Overcoating Time

Overcoating is intended to extend the service life of a metal's surface by providing extra protection via additional layers of paint or coating. While this procedure is effective and cost-efficient, it possesses certain risks.

Maximum overcoating times should be strictly observed because the adhesion of subsequent coats is significantly affected with time. If the maximum overcoating time is exceeded, then the cured surface should be treated accordingly with light abrasive cleaning or other suitable surface preparation processes before additional coatings are applied. It is important to note that this parameter varies according to the coating composition, ambient temperatures and climatic conditions.

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Synonyms

Overcoat Time

Overcoat Interval

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