Heat Stop II Mortar
High-temperature refractory mortar in a 10 lb pail
Upgrade your masonry projects with Heat Stop II Mortar—a premium 10-pound pail of dry-mix refractory mortar designed for professional and DIY use. Specially formulated for firebrick, clay flue linings, and masonry ovens, this mortar is the ultimate solution for high-temperature environments such as fireplaces, pizza ovens, fire pits, and wood stoves. Its easy-to-mix, non-asbestos formula delivers robust, long-lasting joints that can withstand extreme heat, ensuring safe and durable results. The mortar dries to a light gray color that complements most brick and stonework. Perfect for new installations or repairs, Heat Stop II provides reliable performance trusted by experts. Each 10-pound pail covers approximately 6 to 8 square feet, making it an efficient choice for your project.