Contempra GFRC Planter is made from a composite material consisting of cement, fine aggregate, water, alkali-resistant glass fibers, polymer and additives which, when mixed in a scientific recipe and manufactured in a controlled environment, achieves physical properties that allow it to be used for numerous applications, especially those where weight and strength are a significant factor in the design.

GFRC products have been tested for freeze-thaw resistance under ASTM C666, and have show superior results, showing minor flaking after 300 cycles.

Flexural strength – GFRC can have a flexural strength as high as 4000 psi and it has a very high strength to weight ratio. Gfrc can be cast in thinner sections and is therefore as much as 75% lighter similar pieces cast in traditional concrete.