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Reference.org
Primer (paint)
open-in-new
<p>A primer or undercoat is a preparatory <a href="/facts/Coating/fGt3R3VC">coating</a> put on materials before <a href="/facts/Paint/Q176AsIG">painting</a>. Priming ensures better <a href="/facts/Adhesion/NuVQPk4z">adhesion</a> of paint to the surface, increases paint durability, and provides additional protection for the material being painted. </p>