Painting what is primer used for

That is the question. About a decade ago, manufacturers introduced so-called self-priming paints, which allow you to skip priming altogether. Typically, contractors use a primer, then two coats of paint—the primer to seal the surface and improve paint adhesion and the paint to provide color and protection. As for the rest of us? But why not use an inexpensive primer plus one coat of good paint?

The results show whether a paint hides well enough to not require a primer, and also how well it stands up to wear and tear. For the coverage test, we apply one consistent coat to cardstock that has been painted black, and wait for it to dry. Both the paper that covers it and drywall mud are compromised by water or moisture when they are not sealed first with primer. Untreated or unstained wood is also very porous. Glossy surfaces are hard for paint to adhere to.

If the wall is covered in a high gloss paint, enamel or if the wood paneling has been shellacked, you could paint coat after coat and never have it stick. While these surfaces will definitely need primer, we would also recommend a light sanding or scuffing beforehand as well. Before you prime over stains, however, it is extremely important in some cases that you fix any problems that led to the staining in the first place.

For example, if you have old water stains, make sure that the leak is fully repaired before you paint. It will cause more problems later with staining as the least of those problems! If the previous homeowners or tenants were smokers, had pets, were victims of a fire or cooked strong smelling foods, the walls themselves have likely soaked up and retained those odors. A high-quality primer will seal in and eliminate odors and prevent them from returning.

But environmental concerns have put it in lesser favor at the same time science has made advances in latex paint technology. Water-based paint emits fewer toxic fumes, dries quickly, is flexible less cracking and, importantly, cleans up with water. Professional house painters and artists may still favor oil-based paints and primers. Dan Gallagher, a decorative painter in Los Angeles, said "I would not use water-based primers over raw wood unless I had to.

Manufacturers have reformulated water-based primers over in the past five years and although they claim these primers will block stains and wood knot bleeding, I have yet to really see it work. According to Gallagher, oil-based primer is better for areas that get a lot of touching and use, such as doors, windows and cabinets.

However, water-based primers are fine for areas that get less use or contact, such as crown moldings. And, he said, a water-based paint can generally be used over an oil-based primer, but following manufacturer directions is the best course.

In other words, read the can. Here's another way primer is like underwear: there are times when it's optional. For instance, when you cover a sturdy layer of existing paint with the same type of new paint, the primer is not so critical. Even with abundant information available on paints and primers, experienced painters often seek advice from high-quality paint stores.

You might consider doing the same. Give us a call at Tampa or Pittsburgh , or request a visit online. Masonry Primer There are several reasons why it is a good idea to apply a masonry primer before paint. Painting Tips , Priming. Leave Us a Comment. Contact the Pros Ready to get started with your next painting project but unsure if it is in your budget? Read On.