Project guide
Building a gravel fire pit area that drains, stays put and does not throw sparks into dry mulch.
A fire pit seating area is the easiest hardscape project there is, which is why so many of them end up as a muddy ring by the second summer. The failure is always drainage: gravel straight on soil holds water underneath and the surface sinks unevenly.
Three inches of road base limerock compacted for the pad, topped with two inches of #57 rock or pea rock. Pea rock is more comfortable underfoot for a seating area; #57 is more stable under chair legs. Keep organic mulch well away from the pit itself.
A 14 ft diameter circle is about 154 sq ft. Base at 3 inches is 154 x 0.25 / 27 = 1.43 cu yd plus 20 percent, so order 2. Topping at 2 inches is 0.95 cu yd, so order 1. Minimum order is one cubic yard, so this is a small two-material drop.
Mark the circle and excavate five inches. Compact the base in one or two lifts. Set your edge restraint first, because a circle will spread without one. Spread the topping and rake level. Keep at least ten feet of clear non-combustible surface around the pit, and never lay rubber mulch or dyed wood mulch within that ring.
Materials for this job
Compactable base under asphalt, concrete, pavers and driveways.
$31.25 / cu yd MaterialDriveways, French drains, slab base and pipe bedding. The workhorse.
$37.50 / cu yd MaterialPool decks, walkways, paver base, dog runs and landscape fill.
$37.50 / cu ydFire Pit Patio — common questions
#57 rock for stability under furniture, pea rock for comfort underfoot. Both are non-combustible. Avoid rubber mulch and dyed wood mulch anywhere near a fire pit.
Yes. Three inches of compacted limerock keeps the surface from sinking and stops weeds coming through. Gravel laid straight on soil will dish out within a season.
Twelve to fourteen feet across works for a standard pit with chairs. Allow three feet of clear space behind each seat.
Limestone can spall if it is in direct contact with sustained flame, so use a steel ring or masonry pit rather than building the fire straight on the gravel.
Pick your material, enter how many cubic yards and see the delivered number before you talk to anyone.