Insul Stick is a medium-weight refractory castable product designed for high-temperature applications. It is an insulating compound ideal for covering the vertical side walls of fireboxes, woodstoves, fireplace hearths, walls, boilers, furnaces, and more.
The consistency allows the material to "Stick" on the walls.

Key Features

• Versatile Application: Perfect for smooth parging over firebrick in fireplace smoke chambers. It can be cast, parged, troweled, or sprayed.
• High Insulating Value: Combines insulation and strength, meeting ASTM E-136 requirements for sealing wall penetrations for utility passthrough.
• Packaging Options: Available in 5-lb and 20-lb pails.

Specs

Coverage: . A 20 lb pail covers 8 sq. ft. at 1/2" thickness. 

Mixing Instructions: Add 3/4 to 1 quart of clean water per 5 lbs of dry mix and blend thoroughly. No additional additives are required. 

Practical Examples

• Fireplace Restoration: Use Insul Stick to parge over firebrick, enhancing both insulation and strength.
• Boiler Maintenance: Cast custom shapes to fit around boiler components, ensuring a durable and heat-resistant barrier.
• Utility Sealing: Seal wall penetrations for utility pass-throughs with confidence, knowing Insul Stick meets strict ASTM standards.

Insul Stick is conveniently shipped in 20-lb pails, making it easy to handle and store.

Meets ASTM E-136 and ASTM C-199 standards.

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