Firebrick or Fireproof Mat?
I am building a wooden outdoor dining table with a homemade recessed charcoal grill that will sit down in the center of the table and will be flush with the tabletop—using a 12"x5" metal trough for the grill.
The height of the trough is approx. 7 inches.
I plan to build a wooden box under the table to surround the grill but am trying to ensure it is insulated enough not to burn the table or wooden box. I prefer not to line it with fire bricks due to the weight and cost, but I don't know if I can use a fireproof mat (like rolled insulation) or cement board instead.
Any help is appreciated.