Over the years, I have seen a strong trend away from wood-burning fireplaces toward gas fireplaces.

There are two reasons for that. First is the cost. Traditional, all masonry fireplaces are very expensive to build. The entire chimney must be built of masonry and the tall column of cement blocks, bricks, and terra cotta flue liner is very expensive. Plus, a true masonry fireplace requires a foundation to carry the weight. That adds more cost. Pre-fab metal units have taken over the marketplace for cost alone. Some pre-fab fireplace companies are Heatilator, Majestic, and Heat-n-Glo. These fireplaces have some limitations on the size of the firebox opening. If I need a particularly large opening, I turn to Isokern. This is a fireplace that is made of a special type of concrete block system, but it does not require the full masonry flue. So it is a compromise between the design freedom of the traditional masonry fireplace and the cost benefits of the pre-fab units. (more…)