Instead, use lava rocks for your fire pit or lava glass beads as a filler for your fire pit. They are a safe way to create drainage and make your fire pit look nice. … Sandstone, river rocks, natural rocks, and gravel are not ideal fill for fire pits because they are more likely to crack or explode under high heat.
Is decorative lava rock good for fire pits?
Natural volcanic lava rocks are excellent base layers and cost-effective fillers for gas fire pits and fireplaces. Fire glass, ceramic balls and other decorative fire pit products can be added on top of the fire rock for effect.
Why did my lava rock explode?
Why do lava rocks explode? Lava rocks are very porous like a sponge. Water can get trapped inside of lava rocks when they get wet. When the wet lava rocks get heated up by the fire, the water inside turns to steam and expands.
How do you stack lava rocks in a fire pit?
We suggest an inch layer of sand or pea gravel on the bottom of the fire pit for a sturdy foundation. Next, take your lava rocks and place around the fire pit and burner so it fills just enough rock to cover the burner.
How often should you replace lava rocks?
With traditional use, lava rocks should last for about two years before replacements are required because of the build-up of grease, which can affect flavor, as well as the natural deterioration of the lava rocks from frequent heating and cooling after use.
How much does 10 pounds of lava rock cover?
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How much area does lava rock cover?
Lava Rock is typically a deep red, maroon, or black colored pumice-like material. It is very light, weighing approximately 1,300-1,500 pounds per cubic yard.
How many square feet does a ton of lava rock cover?
|Lava rock coverage||180 square feet per ton at 3” depth|
|4” strip stone coverage||65 square feet per ton|
Are lava rocks supposed to turn black?
If your fire glass is turning black this is most likely soot being deposited on your fire glass due to the gas not burning completely. … What you’re looking at, actually, is a fine coating of black soot on the surface, which happens when the gas in your fire pit or fireplace isn’t burning properly.