Paint the firebox
When remodeling your brick fireplace, be sure to spend a little time on the firebox. You’ll want to use a special heat-resistant paint in the firebox since that’s where the fire burns. Check out this high temperature grill and stove paint that can be used inside the firebox and can withstand temperatures up to 1200 degrees fahrenheit.
Prime the brick
If you’re trying to achieve a whitewashed look, or a lighter, airier finish like those offered by Brick-Anew, you can skip this step. Otherwise, choose a stain-blocking primer suitable for brick before you paint the brick. Do not use primer on the interior (firebox) part of your fireplace.