Technical Data

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)

We have 10+ years of experience installing in freeze-thaw conditions without failure or material degradation.

Keep Hartstone looking great for a lifetime