SKA completed a hygro-thermal analysis of two typical wall systems and one typical soffit regarding Fire Station #1 in Harrisonburg, Virginia. The goal of the analyses was to determine the moisture vapor drive in the modeled exterior enclosure systems for determining the potential cause(s) for the reported humidity problem within the building. Based on the hygro-thermal performance from the modeled typical wall and soffit systems, it appeared that better dehumidification within the interior spaces would provide the most effective humidity control for the interior spaces. The moisture drive into the exterior wall systems could be improved through ventilation of the soffit, as well as sealing of any significant air and water leaks through cracks and penetrations (such as windows and pipes) in the exterior masonry.