How do I paint my fireplace firebox?

Scrape any ash on the walls of the firebox, vacuum and then use damp old rags to wipe down the interior of the box. TWO | Use high heat paint in a flat finish. It can withstand temperatures up to 1200 degrees farenheit. I like to use a cheap nylon bristle paint brush that I can toss when done with the oil paint.Click to see full answer. In respect to this, how do you paint a firebox? How to paint your firebox in 3 easy steps. Next, Clean and Prep Your Firebox. Lay a drop cloth or old sheet down in front of your fireplace so you won’t get your carpet or floor dirty. Finally, brush or spray on the high temperature paint covering the walls, sides and floor of your firebox. Also Know, can you paint a fireplace insert? Clean the fireplace surround with a damp cloth and be sure it’s dry before applying the enamel. I purchased disposable foam & bristle brushes and simply painted thin layers over the existing brown/brass fireplace surround. I found that using the foam brush was the easiest to apply. You can see the brown painted insert. Also to know, what kind of paint is safe to use inside a fireplace? Brick-Lined Wood-Burning Fireplaces Brick-anew.com recommends a flat black, heat-resistant paint that will withstand temperatures up to 1,200 degrees Fahrenheit. Such paints may contain silicone resins.Do you need heat resistant paint for a fireplace?A common misconception about painting fireplaces is that you need to get ‘heat-resistant’ paint. If you are only painting the outside of your fireplace, your paint just needs to be approved to withstand temperatures of 200 degrees Fahrenheit, and most general interior paint is!