Cerfactory Foam Smoke Chamber Sealant

HeatShield Cerfractory Foam is a hybrid (ceramic/refractory) coating that expands up to 50% of its volume asit cures. It dries rock-hard to form closed-cell air pockets that insulate and seal gaps, cracks, and holes in yoursmoke chamber. 

HeatShield Cerfractory Foam surpasses both National Fire Prevention Association (NFPA 211) andInternational Residential Code (IRC) for refractory mortar use in fireplaces and chimneys. In accordancewith testing per ASTM C199, HeadShield Cerfractory Foam is rated a Super-Duty refractory mortar able towithstand temperatures in excess of 2900 degrees F.

• Listed to UL 2505
• Insulates fireplace smoke chambers for added safety
• Smooth jagged edges and corbels and reshapes smoke chambers for increased performance
• Insulates from heat and cold
• Resists temperatures up to 2550 degrees F
• Sprayable - apply without demolition of damper and firebox