Hartstone adheres to ATSM standards, so you can have maximum confidence in your space
Technical Data
Hartstone adheres to ATSM standards, so you can have maximum confidence in your space
Hartstone Testing Information
< 4%
Water Absorption
(ASTM C140)
> 6,500 PSI
Compressive Strength
(ASTM C140)
0.75
Solar Reflectivity (SRI)
(ASTM C1549)
< 1%
Freeze-Thaw
Less than 1% loss of dry weight // 50 cycles
(ASTM 1260)