As a summary, summarize the block of healthy materials. How can they be defined. The relevance of healthy living, the corresponding healthy properties of building materials, has the aim of planning and using as many of these positive properties as possible in the building materials so as not to harm users and the environment, ideally to do them good.

The fact that the whole thing is a process and therefore every materiality, every measure, every square meter, of the healthy material that is being used goes in the right direction, is one of the basic definitions that we see in planning under the aspect of healthy materials. As of today, the situation with regard to guidelines is such that, especially in the Federal Republic of Germany, the labels, the number of labels, are currently relatively unclear, indiscriminate, there is a variety of seals, actions, initiatives, projects and programs on the market which, when examined closely, have very different qualities.

It is similar to the non-existent button healthy yes or no. I wouldn't presume to say that the seal is the only good thing, all the others are no good. It would certainly be an interesting, complex process to develop an evaluation matrix of the individual seals, is beyond the scope of today. We would like to give you much more concrete access to the materials now shown and the criteria mentioned above.

It is important to keep the focus on the fact that healthy living is a major factor the more energetically dense buildings exist, in terms of protection against hazardous substances and the deliberate avoidance of polluted old building materials as well as new construction materials. And when it comes to healthy properties, the range goes from pure, biodegradable, renewable, circular, recyclable, recycled. About the ecological certifications for bio-based, acoustically effective, etc.

Look forward to it, be surprised how many other healthy properties, the wide range of materials and the variety of materials have to offer.