Types of Primer Paint
The foundation of any painting project is time spent preparing the surface. From repainting the exterior of your home to brand new sheet rock, they all require some sort of prep work.
One of the most important key ingredients to this is the primer. Selecting the right primer for the project can be confusing, so let’s go through some of the most common tasks:
New Wood -If your wood isn’t seriously stained, use a high-quality latex primer or an oil-based primer. If you have wood that’s stained or you’re painting redwood or cedar, use a stain-blocking primer.
Painted Wood – If your paint is in very good condition, a primer may not be needed. However, if you have exposed wood, chalking or chipped paint, use an oil-based primer. Before you prime, scrape away as much chipped paint as possible and wash off any chalk. (Just because you’re using a primer doesn’t mean you should skip surface preparation.)
Weathered Wood – Use a high-quality latex or oil-based primer. Sand and scrape away as much paint as possible. When you start to see new wood fibers, start priming.
Masonry Block – Fill a fresh surface with block filler before painting. If repainting, scrape off any loose or peeling paint and cover with latex paint. Use a block filler only if the paint has been completely scraped off.
Aluminum and Galvanized Steel – If your surface is rusty, remove the rust and apply a latex or oil-based, corrosion-resistant primer. If the surface is new and rust-free, you can apply a high-quality latex paint and no primer.
Drywall – Use a latex primer. Don’t use an oil-based primer unless you’re putting up wallpaper or covering a stain. Oil-based primers raise the grain of the drywall and make the finish look uneven.
Read more here: Primer Buying Guide
Most do-it-yourself centers like Lowes will have an expert on hand that can give advice as to what primer works best with each situation. If you’re not able to get the information you need from the store, a Denver home painter will definitely be able to give you advice on the best option.
Out of all the information listed above, the most common project that people decide to do themselves is interior painting. It’s a great way to give a room a face lift without spending a lot of money.
Extra primer may be necessary when changing from a dark color to a lighter one, but in general the paint and primer in one will do the trick. This video gives more tips on what primer works the best in specific situations:
Other Situations When You Need A Paint Primer
Another reason to use a primer is to block stains and odors. Some stains will bleed right through the primer no matter how many coats you apply, and the same goes for strong odors like cigarette smoke or pets.
In a situation such as that, you may need to use an oil-based stain-blocking primer. The worst part about any oil-based paint is the smell and the clean up, but the results will be less than satisfactory if you don’t use it.
Water-based stain-blocking primers offer easy cleanup and less odor and come in low- and no-VOC (volatile organic compounds) formulations. These work best to block solvent-based stains like crayon, grease, ink and scuff marks. Both versions are white, so it’s a good idea to tint them gray or close to your topcoat color if they’ll be covered by dark-colored paint.
See more here: How to Choose and Use Primer: Drywall & Paint
If you are trying to paint over mold or mildew, you would be wise to clean the area first followed by a stain-blocking primer. Bleach is one of the best products to kill the growth, mixed as one part bleach to three parts water.
There are primers available that claim to kill the mold without any cleaning, but be careful because exposure to certain types of black mold can cause respiratory problems, irritation to the eyes, nose and throat, rashes, and chronic fatigue.