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Heat Stop Refractory Mortar

All national building codes specify refractory mortar conforming to ASTM C-199 for installing firebrick and clay flue liners in masonry fireplaces and chimneys.

Easy to use, economical and versatile, HEAT STOP® resists temperatures well above 2000° F, assuring code compliance and a quality installation. Regular cement or mortar found in most mortar mixes resists temperatures up to 600-800° F, but residential installations operate well in excess of 800° F.

• HEAT STOP 50 & HEAT STOP II
  For all fireplace, chimney, and bake oven mortar needs. Non water soluble.
• HEAT STOP PREMIXED
  For installing firebrick in fireplaces, boilers, incinerators, furnaces, kilns, etc. Also available in beige.
• HEATCAST 40
  For casting special shapes for woodstoves, hearths, sidewalls and other high temperature applications.
• INSUL STICK
  Combines insulation and strength. Apply over other brick, seal masonry wall penetrations, and more.
• INSUL CAST
  For backup insulating in any masonry application. Ideal for bread and pizza ovens.

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