National media attention and litigation has thrust mold in housing into the headlines. Understanding that while mold occurs naturally, excessive moisture combined with a food source and the right environment can result in unwanted mold in homes. A report released by the National Center for Housing and the Environment (NCHE) identifies common sources of moisture and mold and identifies actions builders, contractors, code officials and consumers can take to remedy and prevent mold recurrence. NCHE's study, Mold and Moisture Intrusion Case Study Report, conducted by the National Association of Home Builders Research Center, details investigations into building issues related to elevated levels of moisture in 18 residences throughout the country. The report found moisture problems generally result from one of three sources: construction moisture present in either the building material or as a result of exposure to weather, elevated relative humidity or rain and groundwater intrusion. "Each case study is an excellent illustration of how to identify and remediate mold," said Josephy Lsitburek, Science Advisory Board member and Principal of Building Science Corp. "These first-hand accounts provide a unique look into common problems builders, contractors, code officials and others are dealing with across the country." The report graphically illustrates 14 common sources of moisture and mold, and provides methods to remediate the problems, such as monitoring interior and exterior relative humidity levels and directing precipitation, irrigation, and groundwater away from the structure.