Fireplace Mantels

I love a good google . If you are a member of the always-cold club, you know what Im talking about. Sitting in front of a roaring fire is my idea of cozy. Whether you love the smell and crackle of a wood-burning fireplace or the ease of a gas-burning one, choosing the right facing is a big decision. Love the ledgestone. When we moved to our house there was some ledgestone in place and I loved it. It didnt last long however as we had to get the whole fireplace how to buid a fireplace remodelled as there was on old back boiler built into the chimney and it had to be removed as we were changing the central heating. Great roundup of materials. The fireplace below is clad in concrete, but it was not poured in place. These concrete panels are thin and reinforced with fiberglass fibers. The panels were made off site and then installed. Much lighter weight - this fireplace is on the upper floor of the home. Can anyone give me some information on ventless fireplaces? I bought a brownstone built in 1910. There are 5 fireplaces, of which none of them work! They used to be coal burning. Recently, I had someone come in and take a look apparently, to vent them will cost a fortune , not to mention the mess. He suggested a ventless gas fireplace instead. I have read about some of the dangers of these.....does anyone have any advice on these? Thanks! My only concern is that they are "busy" and would look best in an otherwise non busy room. I look around my home and it is already maxed out on the busy scale. If I did this to my fireplace it would make everyones head spin. My fireplace is a place where my eye finds rest in the room.