Diy Concrete Fireplace Hearth. Start by attaching your mdo sides to the plywood sides. A hearth is one of three main components in a fireplace, which includes a firebox assembly and fireplace opening.
It's usually sloped on the underside to reduce it's thickness as it meets the floor joists. I did this 2 years ago and it still looks perfect. The first step to building your new concrete hearth is to begin building your frame.
Not recommended for a wood burning or gas fireplace.
However, it wasn't exactly level. I did this 2 years ago and it still looks perfect. This is the fireplace hearth now that the ugly pinkish marble tile has been cleared away. Push the concrete down so it will settle evenly.