What rocks should not be used in a fire pit?
Keystone® - Fire Pit Blocks Old World - Michigan
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Open May 04, 2026 - 12:49 PM
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May 04, 2026 - 12:49 PM
Rocks that should not be used in a fire pit include river rocks, sandstone, and any rocks that are porous or retain moisture, as they can crack or even explode when heated due to trapped water turning into steam. It's safest to use hard, dry rocks like granite, marble, or slate, which are less likely to break under high temperatures.
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Keystone® - Fire Pit Blocks Old World - Michigan
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