Project Guide

How to Build a Fire Pit

1
Safety and Research
SAFETY AND RESEARCH
  • Choose your fire pit location a safe distance from any structures or low hanging trees.
  • Check your local building codes for any restrictions.


The style and shape of your fire pit will determine the type of wall blocks you’ll need to purchase:

  • For a circular fire pit, you need trapezoidal blocks, which are smaller on one side. This allows the edges to fit snugly together without creating any gaps.
  • A square fire pit uses rectangular blocks, and can be constructed in a variety of patterns with blocks of different dimensions.
2
Prepare the Site
PREPARE THE SITE
  • If you’re installing in your yard, drive a stake down the middle of what will be the center of your pit. 
  • Use marking paint tied to a string to draw a circle around the stake. The diameter of the circle should be slightly larger than the outside dimensions of the fire pit you’re planning to build. 
  • Dig out the entire area for your fire pit. The depth will need to be about 7 inches below grade.
  • Pack the dirt solidly all the way around with a hand tamper.
3
Build the Gravel Base
BUILD THE GRAVEL BASE
  • Pour a generous amount of crushed gravel into the hole so your finished base will be approximately 5 inches thick.
  • Wet the gravel thoroughly with a garden hose, and then use the hand tamper to compact it into a hard layer a couple of inches below the surface.
4
Lay Out the Fire Pit
LAY OUT THE FIRE PIT
  • Lay out your first layer of blocks, pushing them together and using a level to make sure the height stays consistent. 
  • If necessary, add leveling sand or tap down blocks to even things out. 
  • After finishing the first row, check the base layer in several places with a long level to be sure the structure is even. 
  • Then, assemble the second level of wall blocks, making sure to stagger the joints between rows.
5
Test-Fit the Fire Pit Bowl
TEST-FIT THE FIRE PIT BOWL
  • Bowls and insert rings come in standard sizes, so make sure to choose the right one for the fire pit you’re planning to build. 
  • After you’ve completed the second row, test-fit the fire pit bowl to make sure the lip rests fully on the edge, and adjust the positioning of the blocks if needed.
6
Add Construction Adhesive
ADD CONSTRUCTION ADHESIVE
  • Remove the second row of blocks. 
  • Add beads of construction adhesive to the bottom layer to bond everything in place. 
  • Refit the blocks and continue the process for the next row.  


Tip: A fire pit typically only has 3 or 4 rows of blocks. The bowl sits on top and can be removed for easy cleaning.