They are external cladding panels that replace stone

It consists of two layers:
First layer: Compressed Polystyrene.
The second layer (outer layer): acrylic paint or clay.

Its specifications:
Nice shape and design
Excellent insulator for heat and moisture
Soundproof
Against fire
Shock resistant
Against insects
very lite
Fast execution
Its color can be changed if desired
Affordable
Insulating for heat, humidity and sound (meaning energy saving)