Home Inspectors ARE NOT licensed roofers. They may be able to accurately assess your roof, however they do not usually have experience in this field. This can cause problems with the inspection report, due to the lack of knowledge in the industry. It is a much safer bet to have a licensed professional in that field to assess any work that may be needed. Furthermore, in the state of Illinois home inspectors are not required to go on a roof that exceeds one story. Since many homes are two stories, this can leave you without an accurate assessment of the entire roof condition.