How to Insulate a Barbecue Grill


You can insulate a barbecue grill from the inside and outside to maintain cooking temperatures over a long period of time. Much of the heat generated by the flame of a barbecue grill is absorbed and radiated outward by the grill body. Layers of insulation reflect the heat back toward the food for faster and more efficient grilling. Thoroughly insulate a barbecue grill to get the most out of the fuel you use and the foods you cook.

Things You'll Need

  • Adhesive thermal insulating tape (rated 1,200 degrees F or higher)
  • Scissors
  • Measuring tape
  • Permanent marker
  • Thermal insulating blanket (rated 1,200 degrees F or higher)
  • Coat the inside surface of the barbecue grill lid with strips of adhesive thermal insulating tape. Overlap each strip of tape by 1 inch over the last for full coverage.

  • Measure all the exterior panels of the barbecue grill that can be covered. Draw shapes of the barbecue panels, with dimensions that are 1 inch larger in every direction than the panels, onto a thermal insulating blanket. Cut out the shapes.

  • Assemble the panel sections so the seams are overlapping by a 1/2 inch. Use the thermal tape to secure the overlapped seams from both sides. Cut exhaust or vent holes to line up with any that you do not want blocked.

  • Slide the custom-fitted thermal cover onto the barbecue once the grill has reached a desirable temperature. Lift the cover off and set it aside when you are tending to the food.

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