Troubleshoot v2 – Paint Cracking



 Paint cracking

Description:  Splitting throughout the paint film thickness.


Identification: Topcoat splitting – Series of straight lines – Primer or substrate may be visible


Probable Cause: Substrate not at room temperature – Component “A” and Component “B” not uniformly mixed – Coating applied over a previously cracked finish or unstable substrate – Excessive total film thickness


Remedy: Remove finish from affected area – Apply primer/sealer – Repaint


Prevention: Remove poor quality/unstable finishes – Check current film thickness before starting. Excessive paint should be removed before refinishing. Mix Component “A” and Component “B” thoroughly – Follow recommended film thickness – Follow recommended flash-off and drying time between coats

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