Building a Natural Stone Fire Pit

Building an outdoor fire pit can create both an attractive and functional addition to your outdoor living environment. Many material options exist. Read our article on fire pit basics for an overview.

Three major natural stone approaches can be considered: Boulders, wall stone, and packaged stone outdoor fire pit kits.

Natural stone provides several advantages:

• Naturally fire-resistant. Natural stone is not combustible and will absorb and dissipate heat naturally. It gets hot, but it will not “pop’”

• Relatively low in material cost. Boulders and wall stone have a wide range of costs but very attractive alternatives exist at the low end of the cost range. A standard pallet of wall stone (3000 pounds) will allow you to build 22 facial square feet of fire pit, e.g., a round fire pit 18” high and 4 ½ – 5 feet across. You would need about 2 tons of boulders to build the same shape. Starting cost for this quantity of stone should be under $300. And there is no additional cost to create fire-resistance.

• Flexibility of design. Natural stone be stacked or laid in whatever shape you desire. Boulders will tend to fit best in a rounded shape. Wall stone can be stacked in angular or rounded designs. Both wall stone and boulders are available in a huge range of colors, textures and individual shapes. The uniqueness of each piece of natural stone provides one of its greatest appeals.

Installation cost presents the biggest variable with natural stone. Whether using a contractor or attempting a DIY project, the larger the natural stone you select, the more difficult it will be to move and manipulate. Special equipment may be necessary to put a large boulder in place. If individual stones need to be shaped to achieve your hardscape design, you or your contractor will need special tools. These factors can overwhelm the cost savings in the raw materials.

Although limited in availability, packaged natural stone outdoor fire pit kits do exist. One interesting option is a kit made from granite counter top scraps cut into wedges to form a circular outdoor fire pit. The price for the kit varies based on how high you want the structure to be but it is an interesting “green” alternative which is extremely easy to build, relatively low cost, and quite unusual in appearance. Most recently, FireBoulder has introduced a fire feature made out of one large boulder. The manufacturer selects suitable boulders, drills out the core to place a gas burner and lava rock, and provides the installation kit for connection to natural gas. Clearly not a DIY install, this new product definitely expands the scope of outdoor fire pit kits.