DID YOU KNOW PRIMER IS IMPORTANT?
Did you know Primer plans an important step in the painting process?
Primer is the step everyone wants to skip. Applying the standard 2 coats of primer takes time, energy, and additional money for primer. During the painting process, its easy to get the paint because you or your client is excited about the cathartic moment when you see the final product, freshly finished “new” room.
Primer serves several important purposes in every paint job.
For one thing, primer helps cover the old paint color and lets you use less of the more expensive tinted paint to get good coverage and vibrancy. It’s also an important part of covering stains and giving you an even-toned paint surface. More important for the longevity of your paint, primer makes sure the surface you are painting has the right texture and porousness (allows the new paint to adhere to the old surface). Otherwise the new paint can scratch off easier, leaving the old paint color showing through your new color.
Glossy surfaces are hard to paint because there isn’t enough texture for the paint to stick to. You will find yourself applying coat after coat and not getting the results you need. If you paint over a glossy surface, you can take your fingernail and dent and/or remove the new paint by touching it with a little force.
On the other hand, overly porous surfaces tend to soak in too much paint. You’ll go through more paint with each stroke. As an example new drywall is considered overly porous and if not primed correctly it will give you dull and flashy spots. The finished paint is also likely to look dull and old even if the color is there since the paint has been pulled into your drywall instead of forming a smooth outer coat. Primer fixes both problems. The first coat addresses the texture issue on the wall, and the second creates a ready surface for painting, be sure to use the back-roll method if applying with an airless sprayer.
Primer can also help seal wood, preventing some of the resinous bleed-through that often ruins paint over wood paneling.
Picture below is a good example showing quality paint with and without primer. Photo is from Refresh Living Article.