This case involves a roofing construction project for a county courthouse. The roof was redone with a vinyl-type membrane, a surface that is very slippery when wet. The vinyl manufacturer who sold the vinyl membrane to the contractor also had a slip-resistant treadway available for purchase. This product could be placed on top of the roof to provide a steady walking surface at various locations and pathways. The contractor brought this material product line to the attention of the county, but the county elected not to install it. It appears the two entities never discussed the uses of the roof to ascertain whether a walkaway was needed or recommended. A few months after the installation of the new roof, a service technician who was on the roof for a different project slipped on a puddle of water and fell sustaining leg and head injuries. The service technician suffered permanent damages and is unable to work. An expert in premises liability, particularly roofing and construction, was sought to comment on the liability of the county in this case.