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.