Which primer is non-sanding and used before applying color to provide a uniform surface?

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Multiple Choice

Which primer is non-sanding and used before applying color to provide a uniform surface?

Primers come in different jobs, and the one that is non-sanding and used before applying color to create a uniform surface is the primer-sealer. It seals the substrate and blocks varying absorbency so the color coat goes on evenly, preventing blotchy color and staining from underlying materials. Because its purpose is to provide a consistent base for the topcoat, it’s designed to be applied and then top-coated with little to no sanding required on the sealer layer. The other options serve different roles: a surfacer is a filler used to smooth out imperfections and is typically sanded smooth before color; a base coat is the color layer itself that sits above the primer; an etching primer is used to promote adhesion on bare metal and is not intended as the final uniform surface before color.

Primers come in different jobs, and the one that is non-sanding and used before applying color to create a uniform surface is the primer-sealer. It seals the substrate and blocks varying absorbency so the color coat goes on evenly, preventing blotchy color and staining from underlying materials. Because its purpose is to provide a consistent base for the topcoat, it’s designed to be applied and then top-coated with little to no sanding required on the sealer layer.

The other options serve different roles: a surfacer is a filler used to smooth out imperfections and is typically sanded smooth before color; a base coat is the color layer itself that sits above the primer; an etching primer is used to promote adhesion on bare metal and is not intended as the final uniform surface before color.

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