Insulating Refractory Repair for Firebrick Woodstoves and Parging - Insul Stick

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