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Does coating over mill scale and rust effect the longevity of powder coating?

April 26, 2017Coating longevity powder rust scale

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Does coating over mill scale and rust effect the longevity of powder coating?

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Yes. Failure to properly remove rust and lime scale on existing surfaces will result in premature coating failure including peeling, cracking and bleeding rust. Grit blasting is crucial to a quality finish on corroded products.