Naturally pure and approximately 180 million years old – Liassic clay forms the high-quality basic material for Liapor blocks. In Liapor's production facility, the natural raw material is mixed and baked at approximately 1,200 °C. This process burns off the organic content and the clay expands. The weight, size and strength of the air-entrained material can be precisely controlled in the technically sophisticated production process. The result is a natural high-performance material that provides outstanding properties despite its low weight.