Expanded Clay

Expanded Clay Aggregate

Expanded or expandable clay aggregate is a commonly used hydroponic grow medium. It is a lightweight aggregate that is heated in a kiln oven to a temperature of 1,200 degrees Celsius. Once the aggregate is heated, it releases gases, which create small bubbles that make a honeycomb-like structure inside of the aggregate. The movement of the kiln makes the aggregate form into a round shape. The round shapes of expandable clay vary in size. Expandable clay has become a popular growing medium in hydroponics and aquaponics because it secures roots and retains water. The clay has a neutral pH, which also makes mold and fungus less likely to grow.

Clay balls are a versatile product, useful for many applications, most notably in the Horticulture industry (as a planting medium) and the building industries (as an insulators). Clay balls have the following uses:
Planting medium for vegetables
Planting medium for flowers
Great ventilation for roots of plants
Lightweight medium for roof gardens
Insulating Material
As primary ingredients in light-weight concrete, replacing gravel

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Brimak contributes to the preservation and the promotion of an exceptional cultural and natural heritage by the valorization of the natural, artisanal and traditional products stemming from local knowledge and know-how.