Paint the fireplace with an oil based paint and a bristle paintbrush. One coat of oil paint is typically sufficient. However, you can apply a second coat of paint as well. Allow 24 hours to dry before you seal.Click to see full answer. In this way, what kind of paint do you use on a stone fireplace?Start with an Oil based primer, they used one from Home Depot- 2 coats. Once that is dry just apply the water based paint of your choice, we used Glidden Swan White (Semi Gloss). Coat until fully covered.One may also ask, can I paint concrete fireplace hearth? How to Paint a Concrete Hearth. A little paint can transform a drab concrete hearth into a colorful and stylish focal point. Paint may not adhere to the concrete surface properly if your hearth is cracked, pitted or has a very rough and uneven texture, and you could end up with mottled and unattractive results. Similarly one may ask, can you stain cast stone fireplace? A cast stone facing on a fireplace enhances the look of the fireplace while providing a rustic outdoor appearance. The raw beauty of the cast stone is attractive as it is, but can be enhanced with an application of stain. Stain the cast stone to complement the colors of the area and enhance the stone’s beauty.How do you paint an old stone fireplace? Paint a Stone Fireplace Step 1: Prepare for Painting. Prepping the stone fireplace for painting is probably the most important part of doing the job right. Step 2: Choose the Right Paint. Pick a paint that is ideal for using on stone. Step 3: Prime and Paint the Fireplace. Step 4: Clean Up.