Renovations of existing buildings have primarily focused on the energy consumption and ther-mal comfort. This project involves health as a priority design parameter, and through an exem-plary case study, the project examines how essential health aspects are better served. The pro-ject focuses on facade design. The project involves daylight quality as a design parameter and focuses on the clearest glass quality on the market. Through a major housing, the study docu-ments how aspects of health and energy are influenced by the quality of daylight/glass quality.