Cast iron stoves typically do not require regular cleaning, but rust can build up on them over time. Some professionals restore old cast iron stoves, but owners can generally perform this work as well.
Most of the cost involved in restoring a cast iron stove is due to the labor required. Rust builds slowly on cast iron, but it can threaten the integrity of the stove if left unchecked. Restoration often begins with a putty knife or other large tool to remove the surface layer of rust, which generally flakes off easily. Sandpaper or steel wool is then used to remove the newer deposits of rust. Sanding the entire unit helps prevent rust from spreading under the surface layer of the stove.