You can give a dingy or outdated fireplace a facelift with a fresh coat of white paint. Read the label of all paints and primers you plan to use to ensure they are appropriate for the brick, stone or tile surface of your fireplace. When painting a stone or brick fireplace, use cheap paintbrushes because the rough surface will fray and damage the brushes quickly.
Scrub the fireplace with a stiff wire brush or with 80 grit sandpaper to remove any existing paint, and scrape away loose mortar or residue from smoke and soot.
Clean the fireplace with soapy water and a scrub brush to thoroughly remove all traces of dirt and soot. These substances may prevent the paint from properly adhering to the fireplace. Let the fireplace dry completely when you finish cleaning.
Apply blue painter's tape to any areas you do not want to paint on the fireplace. Rub the edges of the tape with the side of your fingernail to make sure that they are flat and will prevent paint from bleeding underneath the tape.
Paint one coat of white oil-based primer onto the fireplace with a paintbrush. Let the primer dry completely.
Apply one coat of white latex interior paint to the fireplace. Let the paint dry completely, and follow with a second coat of paint.
Peel up the blue painter's tape approximately one hour after you finish the second coat of paint. Let the paint dry for at least 24 hours before you use the fireplace.