The Thermoplan S75 is a high insulating brick used to construct complete walls without addition of artificial insulation. With a lambda value of 0.075 W/mK and > 8N/mm² pressure resistance, these blocks are ideal to construct a healthy home. A comfortable indoor climate is characterised by: a pleasant room temperature, ideal relative humidity, dry walls and healthy room air. The interplay betwen insulation and heat retention in monolithic masonry walls is unique!