- A small value of the rate of heat loss (U-value), nearly 0,6 w/m²K respectively. The U-value must be lower as possible due to less energy required for heating or cooling the indoors of a building;

- Best energy savers because they eliminate the need for external insulation. Another factor is the decrease of using air conditioners in summer and heaters in winter;

- They are immune to fire due to the fact they were been burnt at 1000 degree Celsius. In case of fire, they get baked without releasing any toxic gases or harmful vapours. It´s high fire rating permit that buildings can be evacuated in a pretty amount of time before the fire damage occurs;

- Easy to handle because they are 60% lighter than the conventional clay/concrete blocks.