What dictates the required preparation, such as sanding or priming, before a new finish is applied to a surface?

Answer

The characteristics of the foundational substrate material

The necessary preparation steps like cleaning, sanding, or priming are entirely determined by the nature and properties of the underlying substrate material to ensure proper adhesion.

What dictates the required preparation, such as sanding or priming, before a new finish is applied to a surface?

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examplesubstrate