Patrick Cassidy and Michael Kibler

Feathering

The Effect of Feathering on Coating Performance

Feedback from waterfront personnel performing maintenance painting for the U.S. Navy has consistently questioned the Navy’s requirement for performing feathering. NAVSEA Standard Item (NSI) 009-321 defines feathering as tapering the edges of tightly adhering old paint at an approximate 30-degree angle into the newly prepared bare metal surface and requires that the contractor “feather edges of well-adhered […]

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coating blister

Analysis of Coating Blister Failures and Associated Coating and Substrate Risks

Blistering is a common coating failure, and for many years, the causes and mechanisms of blistering have been studied to characterize and determine the effects on coating performance and underlying substrates. These studies have led to a better, but still incomplete, understanding of blistering and its effects on a substrate, such as corrosion. Several different

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