The most important principle of drying is to understand the transfer of energy. No one can argue that drying at the correct temperature is the most effective way to restore a wet structure to it preloss condition. Dry too slowly, dry too fast, dry too little, or drying too long are all problematic. Humidity, airflow, temperature and time are four very important elements. Drying time is directly related to the temperature differential between water trapped in materials and the surrounding air, making heat, arguably, one of the most practical ways to dry. The exchange of heat and water vapor from a wet surface determines how quickly a surface will dry. This has been shown in numerous studies on various materials. When we are evaporating moisture we are changing water from a liquid to a gas and as our team of professionals understands, using a chart or calculator helps to make what is often invisible - visible.