How to Build a Brick Outdoor Fire Pit

Transform your outdoor space into a cozy, inviting oasis with a DIY brick outdoor fire pit. Not only does a fire pit provide warmth and ambiance, but it also serves as a focal point for gatherings with family and friends. Here's a comprehensive guide on how to make a brick outdoor fire pit, ensuring a safe and enjoyable experience for all.

Before you begin, ensure you have the necessary permits and follow local regulations regarding fire pits. Additionally, choose a location that's at least 25 feet away from structures and is level, well-draining, and clear of any low-hanging branches or other flammable materials.

Gather Materials and Tools

To build your brick outdoor fire pit, you'll need the following materials and tools:

• Fire bricks (at least 72 bricks)
• Refractory mortar
• Gravel
• Sand
• Trowel
• Gloves
• Tape measure
• Level
• Shovel
• Wheelbarrow
• Garden hose (for watering the site)

Prepare the Site

Start by marking out a 36-inch diameter circle on the ground using a hose or rope. This will serve as the base for your fire pit. Next, dig out the area to a depth of about 6 inches, creating a slight slope to encourage water drainage.

Fill the bottom of the pit with a 2-inch layer of gravel to promote drainage and prevent the bricks from sitting in water. Level the gravel and compact it using a shovel or a tamper.

Create the Base

Mix refractory mortar according to the manufacturer's instructions, using a 3:1 ratio of sand to mortar. Spread a 1-inch layer of mortar over the gravel base, ensuring it's even and level.

Begin laying the fire bricks in a staggered pattern, starting from the outer edge and working your way in. Apply mortar to the bottom and sides of each brick as you place it, using a trowel to remove any excess. Ensure each layer is level and aligned with the one below it.

Build the Walls

Once the base is complete, start building the walls of your fire pit. Continue laying bricks in staggered rows, applying mortar to each brick as you go. Maintain a consistent thickness of mortar between bricks to ensure a strong structure.

As you build upwards, occasionally check the walls for level and plumb using a level and a straight edge. If necessary, adjust the bricks to maintain a consistent height and shape.

Add Rebar and Reinforce

After laying 3-4 courses of bricks, insert rebar into the mortar joints to reinforce the structure. Cut the rebar into 12-inch lengths and place them horizontally across the pit, spacing them evenly. This will help prevent the walls from cracking or collapsing under heat.

Continue laying bricks, alternating the direction of the staggered pattern to create a strong, interlocking bond. Ensure that the top of the fire pit is level and even, with a slight lip to contain sparks and embers.

Finishing Touches

Allow the mortar to cure for at least 72 hours before using your fire pit. Once cured, you can apply a high-temperature sealant to protect the bricks from moisture and stains. Follow the manufacturer's instructions for application and drying times.

Before lighting your first fire, pour a thin layer of sand into the fire pit to protect the bricks from direct contact with flames. This will also help maintain a consistent temperature and prevent excessive heat buildup.

Now that your brick outdoor fire pit is complete, enjoy the warmth and ambiance it brings to your outdoor space. Regularly maintain your fire pit by cleaning it after each use and inspecting the bricks for any signs of damage or wear. With proper care, your DIY fire pit will provide countless hours of enjoyment for years to come.