We added a layer of insulating vermiculite below the bricks in the pizza oven floor. | Wood fired pizza oven, Wood fired pizza, Outdoor wood
Vermiculite Grade 4 Super coarse - Walmart.com
AGA Vermiculite A3040
Meuble De Cuisine Exterieure UMNVE Ensemble de 4 foyers, four à pizza, barbecue, cuisinière Premium Vermiculite FireBrick 23 mm x 11 - Cdiscount Maison