What should go in a gas fire pit — lava rock, fire glass, or a log set?
All three work — the choice is mostly looks with a little function. Lava rock is the natural, budget-friendly base that hides the burner. Fire glass is the modern option that sparkles and reflects the flame. A gas log set gives the most realistic campfire look. What you must never use is ordinary landscaping stone, which can trap water and pop.
Lava Rock: The Workhorse Base
Lava rock is porous, heat-tolerant, and inexpensive. It fills volume over the burner, spreads the flame evenly across the pit, and gives a natural charcoal look that suits a lot of patios.
Many installs use it as the base layer even when fire glass tops it, because it's far cheaper than filling the whole pit with glass and it protects and hides the burner underneath. It's the quiet workhorse of fire-pit media.
Fire Glass: Sparkle and Modern Punch
Tempered fire glass is made to take the heat without popping, and it throws color and reflection you don't get from rock — clean, contemporary, and striking after dark.
It costs more per pound, but a thin top layer over a lava-rock base gets you the glass look without filling the entire pit with it. That layered approach is how most people get the modern face without the full-glass price.
Log Sets: The Campfire Illusion
For the most convincing wood-fire look, an outdoor-rated gas log set — like Real Fyre's hand-painted, oak-cast sets — sits over the burner and mimics real logs right down to the char.
It's decorative-first, but paired with a good burner it reads like the real thing at a glance. Whatever media you lean toward, we'll match it to your pit and fuel and set the fill depth correctly. Ask at your free assessment: (828) 545-0525.
Related questions
- Can I mix fire glass and lava rock in the same fire pit?
- How much fire glass or lava rock do I need to fill my fire pit?
- Can I use regular landscaping rocks or river stones in a gas fire pit, or will they crack and pop?
- Why is my fire glass turning black or cloudy?
- Are outdoor gas log sets different from indoor gas logs?
- How much does it cost to install a gas fire pit?
Still deciding? Talk to a real installer.
Free assessments across Western North Carolina — no pressure, straight answers.