How to Build a Smokeless Brick Fire Pit

Building a smokeless brick fire pit in your backyard can be a rewarding DIY project that adds value to your home and provides a cozy gathering spot for friends and family. Not only do smokeless fire pits reduce the amount of smoke produced, but they also create a more enjoyable outdoor experience. Here's a comprehensive guide on how to build a smokeless brick fire pit that's both functional and aesthetically pleasing.

Before you start, make sure to check local building codes and obtain any necessary permits. Also, choose a location for your fire pit that's at least 25 feet away from structures and follows safety guidelines. Now, let's dive into the step-by-step process of creating your smokeless brick fire pit.

Gathering Materials and Tools

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

• Fire bricks (around 70-80 bricks)
• Refractory mortar
• Gravel
• Sand
• Waterproofing sealant
• Tape measure
• Level
• Trowel
• Mason's line
• Gloves
• Safety glasses
• Wheelbarrow

Preparing the Site

Begin by marking out a circle on the ground where you want your fire pit to be located. The diameter of the circle should be around 4 feet, as this is a common size for fire pits and allows for comfortable seating.

Next, use a shovel to dig out the area to a depth of about 6 inches. This will create a base for your fire pit and help with drainage. Once you've dug out the area, fill it with a layer of gravel, about 2 inches deep, to further aid in drainage and provide a stable foundation for your fire pit.

Building the Fire Pit Base

Now it's time to start laying the fire bricks. Begin by mixing the refractory mortar according to the package instructions. Apply a thin layer of mortar to the bottom of the first fire brick using your trowel, and place it at the outer edge of your circle. Ensure the brick is level and use a mason's line to maintain a consistent height as you lay the bricks.

Continue laying bricks in a circular pattern, applying mortar to the bottom of each brick and using a level to ensure they are even. Leave a small gap between each brick to allow for expansion and contraction. Once you've laid the first course of bricks, use a trowel to scrape off any excess mortar and clean the surface of the bricks.

Constructing the Fire Pit Walls

Now that you have the base of your fire pit, it's time to start building up the walls. Continue laying bricks in a circular pattern, applying mortar to the sides of the bricks as well as the bottom. Stagger the bricks in each course to create a stronger structure, similar to the technique used in building brick walls.

As you build up the walls, periodically check the level to ensure they are even and maintain the circular shape. You can also use a string tied to a pencil or a mason's line to keep the walls straight. Once you've reached your desired height, usually around 18-24 inches, allow the mortar to cure according to the package instructions.

Adding the Fire Pit's Center Column

To create a smokeless fire pit, you'll need to include a center column that allows smoke to escape. This can be achieved by laying a few bricks in a square or rectangular pattern in the center of your fire pit. Start by laying three bricks in a triangle shape, then add more bricks on top to create a small column.

Leave a small gap between the center column and the surrounding walls to allow for smoke to escape. This gap should be about 1-2 inches wide. Once you've finished building the center column, allow the mortar to cure and clean the surface of the bricks.

Waterproofing and Finishing Touches

To protect your fire pit from the elements and extend its lifespan, apply a waterproofing sealant to the exterior of the bricks. Follow the manufacturer's instructions for application and drying times. This step is crucial for preventing water from seeping into the mortar and causing damage to your fire pit.

Once the sealant has dried, you can add any finishing touches, such as a cap or coping stones, to give your fire pit a polished look. You can also fill the center column with sand or gravel to help contain the fire and make it easier to clean.

Congratulations! You've now built a smokeless brick fire pit that's perfect for enjoying cozy nights with friends and family. Don't forget to maintain your fire pit by cleaning it regularly and reapplying waterproofing sealant as needed. Happy gatherings!