Insul Cast

Insul Cast is an insulating refractory castable generally used as a backup to denser refractories such as firebrick, or other solid masonry.

  • Castable weighs approximately 35 lbs. per cubic ft. and is shipped in a 50 lb. bag.
  • A 50 lb. bag covers approximately 6 sq. ft., two inches thick.

Interested? Call, Contact, or Visit Us today.

To learn how to use Insul Cast as an insulator over a dome in an oven, or as an insulator under a hearth, watch the linked video.

  • Add approximately six gallons of clean water per bag and mix thoroughly. No other additives required.
  • May be cast or troweled into place.
  • Ideal for insulating solid masonry in bread and pizza ovens.
  • Meets ASTM C-401 Class O.
  • Possesses cold crushing strength of approximately 200 lbs. per square inch.
  • Apply at a minimum 2 – 3 inches thick.
  • behind a firebox firebrick wall
  • as a sub hearth under firebrick for a bread oven
  • over the top of bread oven dome
  • This product is non water soluble in service. (under firebrick)