Fire Glass Media

Fire glass is highly heat-resistant and specially manufactured to withstand extreme temperatures without melting, breaking, or disintegrating. It will not produce toxic or bad-smelling fumes when used in a gas fire feature. However, it should never be used in a wood-burning fireplace or fire pit, only in gas (natural gas or propane) setups.

The right amount depends on the dimensions of your fire pit or fireplace burn area. A good rule of thumb is to use just enough to cover the burner so it's not visible — roughly 1 to 2 inches of depth — without overfilling, which can smother the flame and create safety hazards. Many retailers offer online calculators where you enter your fire pit's dimensions to get an exact pound estimate.

Yes, fire glass works with both propane and natural gas setups. However, depth matters: with propane, keep the glass layer shallower since propane is heavier than air and needs to disperse close to the flame, while with natural gas the glass can be placed at a slightly deeper depth since the gas rises on its own.

Fire glass is relatively low-maintenance — it doesn't produce ash, soot, or smoke, so it stays cleaner than traditional logs. For indoor use, little to no cleaning is typically needed. For outdoor use, occasional washing with mild soap and water (or a 50/50 water and vinegar mix) and a thorough rinse is sufficient, especially if exposed to debris, bird droppings, or leaves.

Tumbled fire glass has been smoothed to remove sharp edges, making it safer to handle — especially in homes with children or pets — but the tumbling process dulls the surface and reduces its reflectivity, giving it a frosted appearance. Non-tumbled tempered fire glass is not smoothed, so it retains maximum shine and light reflection for a more dazzling visual effect, but its edges can be sharper and require more careful handling.