Wall panels can be produced using many different types of raw materials, which allows the panels to be produced anywhere in the country. For example, they can be made of lightweight concrete such as expanded clay concrete, aerated concrete, pumice concrete, vermiculite concrete or expanded polystyrene concrete. It is also possible to use concrete made from materials such as sawdust, felt, textile fibers. This gives the panels excellent insulating properties. If desired, insulation methods such as pouring, filling or laying can be used today.