Hi Everyone, I was referred to this sight because of my fireplace. I would like to fix it so I can use it. It has a chimney and supposedly burns both wood and gas. Someone says it's a zero clearance. Currently, there are some cracks and there are no doors. How do I fix it? My home inspector told me to use a heat sealant for the cracks, but not sure if that's the most appropriate solution. Also, I really want to be able to use wood in the fireplace, but I don't necessarily need the heat in san diego. There are no doors so I'm not sure how to replace them.