Heat Stop® INSUL CAST Refractory Mortar, 50-lb.

Product Attributes

  • Item Number: 55026
  • Product: Heat Stop® INSUL CAST Refractory Mortar, 50-lb.
  • Stock UOM: EA
  • Manufacturer: CMS Industries
  • Tradename: Heat Stop®
  • Weight (lb.): 50
  • Container Size: 50 lb.


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

Uses & Features

  • 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.
  • 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)