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I don't understand the use of silicia sand and lava rocks,and wool. Are they all needed or is it all about looks and can you use just one or the other? I have a ventfree natural gas fireplace but wanted the glowing embers look. Does the heat alone act
Posted by Elite Deals - Chris M. on 24 October 2013 03:47 PM

Our Answer:

Sand is used in a natural gas application to insulate the burner assembly from the heat of the flames and to also serve to disperse the flow of gas evenly across the burner tray. It is indeed required for vented appliances. Rock wool or ember glow (as it is sometimes called) is purely aesthetic. It has no bearing on the operation of the gas appliance. It is indeed fireproof and is designed to react to the heat of the flames in a glowing manner. Again, these items are primarily used in vented applications. Vent free appliances are very particular about what and what quantity of burner media (sand, lava rock, or rock wool) can be used. Many manufacturers prohibit the use of any burner media at all. If you'd like to reply with the model of your fireplace, we'd be happy to research the correct accessory for your appliance.

In Response to Question:

I don't understand the use of silicia sand and lava rocks,and wool. Are they all needed or is it all about looks and can you use just one or the other? I have a ventfree natural gas fireplace but wanted the glowing embers look. Does the heat alone activate the wool? I assume its fire proof. Since a "real"fireplace doesn't have rocks or sand I wasn't sure what the use of these is meant for.

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