Gran’ide products are manufactured to satisfy ASTM specifications and requirements that apply.
Zero flame spread, zero fuel contributed, zero smoke developed. Compressive Strength ASTM C & ASTM C 513: 4300 PSI
1.5” – 3” depending on style.
Weight: 5 – 8 lbs per sq. ft. depending on pattern.
The color becomes an integral part of the stone due to the manufacturing process. No color loss or deterioration has been experienced on existing applications even after prolonged exposure.