REALISTIC GLOWING EMBER EFFECT – Rock wool mineral fiber glows like live coals wherever the flame makes contact, instantly transforming a gas fireplace or gas log set into a convincing wood-fire scene. Simply pinch small clumps and place near gas ports on the burner pan or on logs where flames touch.
MADE IN THE USA – Proudly manufactured in America using 100% asbestos-free mineral fiber. Unlike imported alternatives, Midwest Hearth Rock Wool is formulated to U.S. quality standards and has been trusted by homeowners and professional fireplace installers for over a decade.
COMPATIBLE WITH NATURAL GAS AND PROPANE APPLIANCES – Works with vented gas fireplaces and gas log sets. May also be used with unvented (vent-free) appliances; always follow your appliance manufacturer's instructions for vent-free applications, as requirements vary by unit. Compatible with both NG and LP systems.
INSTALLER-APPROVED TIPS FOR BEST RESULTS – For enhanced ember glow, use a stiff bristle brush to lightly flick a dusting of rock wool onto logs where flames will touch. Lightly spritz the log with water first to help the wool adhere. Do not pack wool tightly over gas ports — the flame must be able to breathe.
LASTS FOR YEARS – Mineral fiber composition resists extreme temperatures and does not deteriorate with repeated use. One 6 oz bag is sufficient to dress a full-size fireplace burner pan, with material left over for future touch-ups. Can be paired with lava rock or vermiculite for added depth and realism.
Unit Count
1 Count
UPC
638170653155
Model Number
MH Rock Wool
Manufacturer
Midwest Hearth
Manufacturer Part Number
MH Rock Wool
Flavor
unflavored
Item Form
Mineral Fiber
Material Type
Rock Wool
Item Weight
170.1 g
Material
Rock Wool
The Glow
Rock wool mineral fiber glows vivid amber and red wherever the flame makes contact — indistinguishable from live wood embers. Instantly transforms any gas fireplace into a convincing, realistic fire scene.
Chosen by Professionals
Chosen by homeowners and professional fireplace installers for over a decade. A great way to add that finishing touch to your gas fireplace or gas log set.
Simple to Install
No tools, no special skills. Pinch small clumps and place near burner ports on the pan, then add small amounts to logs where flames will touch. Setup takes minutes and the results last for years.
Designed for Long-Term Use
Mineral fiber resists extreme temperatures and does not deteriorate with repeated use. For even greater realism, pair rock wool with Midwest Hearth Lava Rock, Vermiculite, or Glowing Embers — all available separately.