Do you make a high heat brush on paint for firebox bricks?
It is not recommended to paint over brick and mortar, as the high temperatures often cause the paint to discolor and separate quickly. The better option would be to apply a thin coating of refractory mortar over the existing material. This will seal and protect any damaged brick, while enhancing the thermal efficiency of the fireplace.
Submitted by:Tyler M. - NFI Master Hearth Professional on June 4, 2019