Admitted to the Union in the year 1816, Indiana is the 19th state of the United States. It is home to roughly 6,785,528 people, and ranks as the 38th largest state, occupying an area of 94,326 km². Most of Indiana falls under a humid continental climate, facing hot, humid summers and cold, freezing winters. The extreme southern area of the state, however, enjoys a humid subtropical climate, which is characterized by higher-than-average precipitation. Indiana has consistently been ranked among the top 10 states vulnerable to tornadoes and hurricanes, despite not being a part of the tornado alley. The state also has light droughts, and can face heavier-than-expected snowfall during the winter months.
Asphalt and slate shingles are extremely common in Indiana, though tiles made from clay or concrete are also used. Combination gable roofs, which use the standard gable roof design but use a combination of materials (for instance, clay and asphalt) to better combat incoming tornadoes. Eco-friendly options such as solar-battery shingles are also catching on. Besides these, many Indiana homes also prefer to use “A-frame” roofing systems - they are similar to gable roofs, but the roof lines here join at a smaller angle, creating the “A” shape. This structure helps roof panels double as walls in the home, which adds to the property’s beauty and strength. Many people also opt for rooftops that can collect water from precipitation, which may be used as a reservoir in times of drought.