For Woodstoves & Inserts & Fireplaces & Alternative Fuels
Build Stronger. Seal Hotter. Last Longer.
Take your fireplace construction and repair to the next level with this high-performance, pre-mixed fiber-reinforced silicate mortar. Engineered for extreme heat applications, it’s the professional’s choice for setting, coating, and repairing firebrick in fireplace fireboxes.
Designed to handle temperatures up to 3000°F, this mortar delivers unmatched durability and a secure, long-lasting bond where it matters most. Its fiber-reinforced formula adds strength and crack resistance, ensuring your masonry holds up under repeated heating cycles.
Perfect for masonry-to-masonry joints under 1/4″ thick, it creates a tight, reliable seal that stands up to intense conditions—making installation easier and performance more dependable.
Why Choose This Mortar?
- Withstands extreme heat up to 3000°F
- Fiber-reinforced for added strength and durability
- Pre-mixed for easy, consistent application
- Ideal for firebrick setting, coating, and repair
- Trusted for fireplace firebox construction
Built for indoor use only. Not recommended for outdoor applications.