The Operating Systems, Lower Level, Interior and Exterior Inspection sections are EXTREMELY condensed versions of those found in our home inspection book: Home Inspection Business From A to Z
Real Estate Appraisers are not required to be home inspectors. However, I will include these sections anyway to give you some basic details about home inspections.
It's very important that the attic area be properly ventilated to prevent excessive humidity or heat in this area. Even in cold winter months humidity can cause problems in attics. As a result, ventilation to the exterior is needed in the winter. In the summer months attics can reach 150 degrees Fahrenheit which adds a big heat load on the house.
Check for an adequate number of attic vents. Check the condition of the screens on these vents. They need to be kept clean. Screens help to keep birds and bees out of the attic. Any bathroom fans should discharge to the exterior. Sometimes you'll find them discharging in the attic. This isn't recommended because it promotes moisture problems.