Defects in building fabric, climate change, and changed user behavior make indoor mould a widespread issue in buildings. The manual "Mould Damage - Detecting, Evaluating, Restoring" shows building practitioners how to get to the root of the problem and solve mould issues in the long term. Using concrete case studies and numerous illustrations, it covers the following topics: growth conditions for mould, identifying and eliminating sources of moisture, minimum requirements for the building envelope, problem areas of the users, ventilation, basic ventilation, ventilation on demand, microbiology for the practitioner, health issues with mould and moisture damage, solutions for new and existing buildings, tasks of the planner and tradesman during renovation, and legal information.