It is fundamental to verify if the material we’re selecting to use as insulation has a good behaviour (technical characteristics). Next there should be evaluated the usage associated impacts, both in terms of environmental impacts, and in terms of impacts for public health. As such, there should be sought a material that has no negative effects for health (such as asbestos, that is considered to be carcinogenic). On the other side, there should always be chosen more environmental friendly materials (that are manufactured using renewable resources, that are produced using cleaner technologies, that are recycled, etc.) such is the case of cork.