Secure a drop cloth or plastic sheet around the edges of the counter to protect the walls, sink and floor from paint spills.
Wash the counter top with soap and water, and wipe it dry with a clean towel. Avoid using the counter top for two to four hours, allowing it to dry completely.
Rough the counter with sandpaper to lightly scratch the surface to help the paint stick. Wipe the surface with a damp towel to remove all the dust residue. Wait for the counter to dry for about two hours before proceeding.
Apply a layer of primer to the counter surface with a roller; allow it to dry for about six hours. Apply a second layer of primer and let it dry overnight before proceeding.
Apply a layer of satin enamel on top of the primer with a roller in the color you want for the counter. Allow the enamel to dry for about six hours, and use a roller to put on a second application. Let the enamel dry for about two days to guarantee it dries completely.
Seal the enamel paint by applying a clear gloss varnish. Use even strokes with the paintbrush to keep the varnish smooth and without bubbles. Avoid placing items on the counter for a minimum of four days to let the varnish harden.