BOSS® - 03422BK10 - 139 Hi-Temp Mortar, Black

Boss® 139 Hi-Temp Mortar Is A Non Combustible Silicate Cement That Can with Stand Extremely High Temperatures. Formulated For Repairing Chimneys, Fireplaces and Sealing Wood-Burning Stoves and Appliances, This Product Has Strong Adhesion and Sets To Become Rock Hard When Fired.

Boss® 139 Hi-Temp Mortar Cannot Be Used In Areas Where There Is Constant Movement, or Where Wet Conditions Exist or May Occur.

Boss® 139 Hi-Temp Mortar Has Been Tested and Exceeds Astm E-136. Can Be Used In Wood Frame Construction Where An Astm E-136 Non Combustible Sealant Is Specified and Where Allowed By The Building Code. This Includes Sealing Around Pipes, Ducts, Vents and Chimneys At Ceiling and Floor Level Before Drywall Is Applied.

Features:

• Can with Stand Extremely High Heat
• Apply Using A Standard Caulking Gun
• Dries Rock Hard When Cured and Fired
• Safe To Use and Handle
• No Harmful Odors
• Water Clean-Up (Prior To Curing)
• Voc Compliant
• Contains No Asbestos Fillers Of Any Kind
• Meets Residential Construction Code Approvals Including I.R.C.