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.

Step 1

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.

Step 2

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. 

Step 3

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. 

Step 4

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.

Things You Will 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)

About the Author

Jeffrey Brian Airman is a writer, musician and food blogger. A 15-year veteran of the restaurant industry, Airman has used his experience to cover food, restaurants, cooking and do-it-yourself projects. Airman also studied nursing at San Diego State University.