Prepare the surface by removing any nails and filling in holes with plaster compound and a putty knife. Allow the plaster compound to dry and sand any rough edges with 60-grit sandpaper.
Tape off any surrounding areas with painter's tape. If you are applying the chalkboard paint to walls, tape the trim, window frames and ceiling to avoid getting paint on them.
Apply two coats of chalkboard paint in thin even layers using a sponge roller and tray. Allow the coats of paint to dry before adding another.
Sand the first layer of chalk board paint using 220-grit sandpaper. Wipe any dust with a damp cloth.
Apply two more coats of chalkboard paint using a sponge roller. Allow the paint to dry thoroughly.