Partner Post: The Quick Reference Guide to Paint Primers

March 9, 2018 Dunn-Edwards Corporation

This content was republished with permission from Associa Advantage partner, Dunn Edwards Paint. Associa Advantage partners provide savings on household goods and services used by Associa community homeowners and associations. Visit AssociaAdvantage.com to discover savings from Dunn-Edwards and other Advantage partners.

All paints have four main ingredients: pigment provides color, coverage, and gloss control; binders bind the pigment together and provide film integrity and adhesion to a surface; liquid, also known as the solvent, provides desired consistency and makes it possible to apply the pigment and binders to the surface; and additives are ingredients that provide specific paint properties such as mildew resistance, good flow and leveling. In order for paint to perform optimally, a primer is necessary in many cases. Primers are problem solvers that are less like paint and more like glue; they stick to whatever you’re prepping and seal the substrate to ensure a good uniform finish that adheres to the surface.

WHEN SHOULD YOU PRIME?

For interior walls, priming is only necessary in the case of stains, repairs, remodeling, or when painting a color that’s drastically different to the existing color. Whether painting drywall, plaster, woodwork or other interior surfaces, priming ensures the surface is sealed so the finished paint can adhere and dry to a smooth uniform finish.

Exterior painting almost always requires the use of a primer as these surfaces are constantly subjected to harsh conditions such as moisture and UV rays. This exposure will cause these surfaces to deteriorate, making paint adhesion difficult. Primers are always recommended when painting exterior surfaces such as wood, masonry, and metal. In addition to providing good adhesion, exterior primers are formulated to deal with specific conditions such as efflorescence on masonry or tannin staining on cedar and redwoods.

WHICH PRIMERS SHOULD YOU USE?

There is a perfect primer for almost any surface, and often the results with a primed surface create a more professional finish. So, which one should you use? Below are some examples of how you can match a primer to the surface of your choice. The following recommendations are ideally suited for repaint and/or maintenance painting projects. When dealing with paint specifications on new construction projects, more careful considerations must be given to primer selection.

  • Interior Stains and Odors: Some stains will bleed through most primer and paints no matter how many coats are applied. The same applies for severe odors like smoke from fires or cigarettes. The solution is a stain-blocking primer such as Block-It Premium.
  • Drywall Repairs: Drywall paper and various drywall muds used for repair work absorb paint differently. This will result in blotchy, dull areas under the paint and an inconsistent sheen. The solution is to seal the drywall using a primer-sealer such as Vinylastic Premium.
  • New Wood: Whether your wood has serious tannin staining, or it simply requires a good primer before painting, use a premium wood primer such as Ez-Prime Premium.
  • Masonry: To promote excellent adhesion to surfaces such as stucco, brick, or concrete block, and provide resistance to alkali and efflorescence, use an epoxy-fortified primer such as Eff-Stop Premium for porous masonry.
  • Concrete Block: For a smoother finish on block, fill this porous surface with a block filler before painting. If repainting, scrape off any loose or peeling paint and cover with latex paint. Use a block filler such as Smooth Blocfil Premium only if the paint has been completely scraped off or removed.
  • Metal: If your surface is rusty, remove the rust and apply a corrosion-resistant primer such as Bloc-Rust for ferrous metals or Galv-Alum for galvanized metal and aluminum surfaces.

About the Author

Dunn-Edwards Paints® has produced and sold premium paint products for more than 90 years and is the #1 Choice of Painting Professionals based on an independent study where licensed painting contractors in Los Angeles, San Diego and Phoenix overwhelmingly selected Dunn-Edwards Paints as the paint they would use on their own homes. With 129 company stores in California, Arizona, Nevada, New Mexico and Texas, and more than 80 authorized dealers throughout the Southwest, Dunn-Edwards is one of the nation’s largest independent manufacturers and distributors of architectural, industrial and high performance paints and paint supplies. The company is dedicated to preserving and protecting the environment, and produces its coatings in the world’s first and only LEED® Gold-certified manufacturing plant. Based in Southern California, the company is composed of approximately 1,500 employees. For more information, visit www.dunnedwards.com.

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