• Factory built chimneys are easier to install and at a lower price.
• Masonry chimneys are usually made of brick, block or stone. They are more expensive and harder to install than factory built chimneys but in expense of that they incorporate a classical appearance and beauty.

To function properly, a fireplace chimney should be at least 10 or 12 feet in overall height. Where it projects above the roof, the chimney should be at least 3 feet tall, and at least 2 feet higher than anything within 10 feet of it-including other buildings, trees, etc. One other thing that can affect the efficiency oh a fireplace chimney is that the gradual accumulation of soot can seriously affect the way your chimney performs. Thick layers of soot can physically restrict the flue so there is no longer enough free area to vent the fireplace properly. Thus, a fireplace chimney should be swept and cleaned at least once a year by a professional.