Adding a Clear Coat to a PVDF (Kynar) Paint Coating

MIT Media Lab,  courtesy of Doralco

MIT Media Lab, courtesy of Doralco

70% PVDF coatings offer the ultimate protection in building performance. These finishes exhibit outstanding resistance to humidity, color change, chalk, gloss loss and chemicals. These sustainable coatings will ensure a long-lasting, durable finish. No other coating system can withstand the rigors of nature and time like those based on the Kynar 500 resin.

70% PVDF coatings include standard color two-coat systems, consisting of a primer and color coat; two-coat mica systems, also consisting of a primer and color coat; as well as three-coat and four-coat systems for metallic and exotic colors. The three- and four-coat systems include a clear top coat and sometimes a barrier coat. A clear top coat is required for one of two reasons, to protect and encapsulate the metallic flake in the topcoat, or to give added UV protection to bright and exotic colors. The clear coat is an essential component of three and four coat systems.

The paint manufacturer specifies by the formulation of each specific paint code when a clear coat is required on a paint coating. Adding a clear coat to a two-coat paint system is not recommended by the paint manufacturer, and will not extend the longevity or performance of the finish, or the paint coating warranty.

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