Is Mold in Modern Buildings a Sign Of Energy Loss?

Mold is not always a sign of energy loss. It is usually the result of poor moisture management in the built environment. There are cases where the breaks in the thermal envelope will cause condensation due to the lower dew point. In residential houses it is because the moisture is not properly maintained or there are leaks in the building envelop bringing moisture in from the outside it the relative humidity is greater. I think an article needs to be written on humidity management for Rate It Green. There are several factors: 1. If you can control the transfer of moisture through the building envelope with proper control layers that is a good start. 2. Proper ventilation and humidity control equipment will make for a healthier environment for the occupants of the space. Here is an article on Rate It Green discussing ventilation. https://www.rateitgreen.com/green-building-articles/demystifying-ventilation-and-energy-recovery-ventilators-ervs/146