Large Black Lava Rock (1.5" - 3") - 20 Pounds 
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Fire Glass Calculator
Frequently Asked Questions
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Lava Rocks, Lite Stones & Balls
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How much Lava Rock do I need for my fire feature?
Use our handy lava rock calculator to determine how much lava rock you or your clients will need for your fire feature.
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Can I use lava rock with fire glass?
Yes! using small lava rock as a base layer is very cost effective. We recommend using small lava rock as a base to completely cover the burner and then adding 2" of fire glass depth on top of that.
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How many lava rocks come in a 10 pound bag?
All our 10 pound bags of lava rocks are based off of weight and not quantity of rocks. The number of rocks will very slightly from bag to bag.
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How many tumbled lava stones come in a 10 pound bag?
All our 10 pound bags of tumbled lava stones are based off of weight and not quantity of stones. The number of stones will very slightly from bag to bag.
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What are your Lite Stones made of?
Lite Stones and Lite Stone Balls are made of a lightweight ceramic fiber material.
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What is the proper media base for lite stones and lite stone balls?
Use small black lava rock as a base to properly insulate the burner. The stones/balls can be placed on top and rest in the flames like a decorative topping. The firepit should be fully functional with just the lava rock.
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Can I use all Medium or XXL Lava for my firepit?
We recommend using a base layer of Small Black Lava to insulate the burner and then you can use the larger pieces as a decorative topping.
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Which tab should I use in your calculator for Tumbled Lava Stone?
Tumbled lava rocks have similar density to fire glass.
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Do I cover the burner with fire glass?
YES, a burner should NEVER be used unless it is completely covered. A 1/4" diameter media base is strongly recommended to cover the burner before applying the final topping. The media should cover the burner by about 1/2" to 1" before the final topping is added. Our small lava rock works best. Operating a burner without proper coverage can cause warpage and possible permanent damage to the burner and burner pan. This will also void the warranty on the product.
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Are these products safe for high heat?
Absolutely. All of our lava rocks, Lite Stones, and Lite Stone Balls are rated for use in fire pits and fireplaces. Just make sure they are completely dry before lighting to avoid any popping or cracking.
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Do I need to replace lava rock over time?
Yes. Lava rock can deteriorate after a few seasons due to weather and heat. Check it annually and replace as needed for best performance.
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Don't See Your Question Listed?
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Don’t see your question listed?
Please contact [email protected] or call 888-264-1017 and one of our representatives will gladly assist you.
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