A thermoclay is a low-density ceramic block that is thicker than conventional brick, which is used as an alternative to other more common construction materials, such as bricks or concrete blocks.

The porosity of the material, together with its geometry, allows for single-leaf walls with similar performance as walls composed of several layers.

Thermoclay saves on auxiliary means, since no formwork is needed and it can be tackled by a self-builder. For example, using thermoacoustic blocks of lightened clay or thermoclay, load-bearing walls with a single sheet can be built, with performance equivalent to those composed of two sheets and an insulated air chamber, with a consequent increase in execution performance, since labor is reduced, mortar is saved and thermal and acoustic insulators can be dispensed with. By way of comparison, in a wall of this type it takes half an hour to raise one square meter, while in a double-leaf wall, it takes almost two hours.

Among its unique qualities is its porosity, which allows the home to breathe, and its good thermal inertia.

The advantages of the Termoarcilla block are the following:

Starting from a mixture of clay, expanded polystyrene spheres and other granular materials, which are gasified during the firing process at more than 900 °C without leaving residue, a fine porosity is created that is homogeneously distributed in the ceramic mass of the block. These are visible macropores.

Other additives used to lighten the clay are: paper pulp, pomace, etc.

To continue improving the product, a study is being carried out, which is in the experimental phase, to determine with which additives optimal microporosity could be achieved in the fired clay that constitutes the block. This microporosity would not be noticeable to the naked eye, and would allow the thermal insulation of the blocks to be improved.