Hello, I recently bought a home with a brick fireplace (I think the fireplace was built in the 60s or 70s, so 40-50 years old), and today I had it cleaned and inspected. The inspector found cracks in the tile flue (he said evidence of previous chimney fires), and didn't really give me a straight answer about the safety in its current condition. He told me that to cover himself legally he couldn't recommend we use it in its current condition, and went on to talk about replacing the flue with a steel insert. I don't doubt the intentions of the sweep, I think they were very professional, it was certainly not a high pressure sales situation or anything, I just think he didn't want to say something that could legally get him into trouble, which I completely understand. I'm not opposed to putting in a flue liner, but I'm not in a situation where I can do it now, and I'd like to use my fireplace. So, my question is essentially this: is it dangerous for me to use my fireplace, in its current, sweeped-but-cracked condition, at least in the short term (the rest of the winter)? I've attached a couple pictures of the damage he indicated, thanks in advance. Also, if this isn't the proper place to ask such a question I apologize, I'm new here.