This refractory coating is a blend of fine, high-ppurity refractory aggregates and a powerful chemical binder. When applied to the porous ceramic fiber, it fills the surface voids and air-dries to form a semi-cured layer.
Upon initial heat-up, the coating sinters and fuses with the fibers below, creating a monolithic, ceramic bond. The finished surface acts as both a protective barrier and a radiant heat reflector, sealing the insulation and preventing thermal degradation, while its reflective properties bounce energy back into your workspace, maximizing efficiency.
‌Insulation Application Best Practices --
‌Pre-wetting
Lightly spray water on all exposed insulation surfaces
Avoid dry spots (they absorb refractory mixture too quickly, causing cracks)
Avoid excessive water (prolongs drying time)

‌Layering Technique
Apply multiple thin layers instead of one thick layer
Add slightly more water than minimum for better results
Allow each layer to dry completely before applying the next
Thick/heavy applications tend to trap air bubbles, leading to cracks during drying and heat treatment

‌Heat Treatment Process
Always heat-treat cement before full operation
Start with small wood fires inside smelter
Gradually increase temperature over 1-2 hours
Switch to propane to reach 500°F
Follow this cycle: heat → cool → repeat
Increase temperature by a few hundred degrees each cycle until reaching optimal operating temperature