If you have a plain concrete floor in your basement, you might be considering having that floor surfaced and painted to improve its appearance. While there are companies that do this professionally, you can probably tackle the project yourself if you have basic home improvement skills and some patience. Here are the basic steps for doing so.
Step 1: Clean the Floor
If the floor is not perfectly clean, your filler and paint will not adhere to the concrete. Look for a degreasing solution that states it is safe for concrete, and use it according to the instructions on the label. Do this a few days before you plan on working on the floor so it has plenty of time to dry. Open any windows and set up a few fans to encourage drying.
Step 2: Fill the Cracks
Your floor will look a lot smoother if you fill in any cracks or divots before applying the paint. If your floor is new, of course, you can skip this step. Purchase a concrete patching mix from your local hardware store. This type of solution usually comes pre-mixed. You can just pat it into the depressions and holes using a tamper or trowel. Let the concrete dry for at least 2 days; three days is even better.
Step 3: Prime the Floor
Look for a primer made specifically for concrete. This type of primer is meant to provide a moisture barrier so that if the ground beneath your concrete floor gets wet, the moisture does not seep up and ruin your paint. Apply the primer using a large paint roller with a very long, coarse texture. Start on the far end of the floor, and work towards yourself. One coat of primer should be enough. If your concrete is very rough-textured, you can apply a second coat to smooth it out a bit.
Step 4: Apply the Paint
Give the primer at least a day to dry. Then, start rolling on the paint in the same manner that you rolled on the primer. If you use a self-sealing paint made for concrete, you can just apply two coats of the paint -- waiting a few hours between them -- and then be done. If you use another type of paint that is not self-sealing, you will need to let the paint dry and then apply a paint sealer on top of the paint.
For more information, contact companies like Central California Surfacing.