The answer to 'flat roof installation cost in Illinois' is that the cost can vary significantly depending on several factors. Typically, the cost for a flat roof installation in Illinois ranges from moderate to high, with many variables affecting the final price.
Key factors that influence the cost include the size and complexity of the roof, the materials used (e.g., single-ply membrane, modified bitumen, or built-up roofing), the accessibility and condition of the existing roof, and the labor costs in your local area. Additionally, the need for any structural repairs or modifications to the building can also impact the overall cost.