Apply primer with a paintbrush or roller to each surface that you intend to cover with paint.
Do you need primer for floor paint.
Step 3 from the bucket pour primer into a paint tray and work a roller into the tray until it is fully loaded with primer.
After that long you would need to prime the floor again.
You will need to apply at least two coats of primer.
Some masonry surfaces can have a high ph level which will cause adhesion problems if you apply paint directly to the surface.
When you are painting new unfinished drywall and you do not want to prime separately consider using self primer paint.
A quality masonry primer will allow you to safely paint over a wider range of ph levels without risk of adhesion loss.
With your brush paint cut in a 2 3 wide area around the perimeter of the garage floor.
Others may recommend longer.
There are several reasons why it is a good idea to apply a masonry primer before paint.
If you are unable to paint the floor on the same day don t worry.
If the surface has been finished previously such as with stain and polyurethane or old paint.
Follow the specific instructions on your chosen.
New drywall always has to be primed in some form.
Start in a corner and continue along the edge of the wall.
Just be sure to do so within the next 30 days.
Some may recommend four hours.