Detail Painting and Second Coat (if needed)

What happens here

Continue working through the fireplace interior, ensuring all surfaces are completely covered. Pay special attention to the edges, corners, and any textured areas where the roller might not have provided full coverage. Use the paint brush to meticulously fill in any missed spots or uneven areas, aiming for a consistent, solid black finish throughout the firebox. If necessary, allow the first coat to dry according to the manufacturer's instructions, and then apply a second coat for enhanced durability and a deeper color.

Goal: Achieve a complete and uniform black finish on all fireplace interior surfaces.