Here are some key features to consider when choosing a high temperature calcium silicate board:
Temperature rating
How high of continuous and peak temperatures the board is rated to withstand. Common ratings are 1200°F, 1500°F, 2000°F.
Dimensions
Thickness, length, width available for your specific application space needs.
Edges
Square or tapered edges affect installation and aesthetics for visible applications.
Surface finish
Some have a glazed or painted face for cleaner looks, others are rough unfinished.
Composition
Percentages of silicon dioxide, calcium oxide can affect properties like compression strength.
Moisture resistance
Important for humid or wet environments where mold/degradation is a concern.
Fire resistance
Class A rating essential for use near flames, sparks or other ignition sources.
Toxicity
Consider off-gassing of any hazardous materials at high temps for personnel safety.
Physical properties
Needed compressive, flexural and impact strengths for load-bearing use.
Compliance standards
Must meet requirements of regional building codes for fire safety use.
Choosing a board matched to your specific temperature, environmental and installation conditions helps ensure long-lasting, reliable performance.