The answer to 'cost to replace roof decking in Chicago' is that the cost can vary significantly depending on several factors. Typically, the cost to replace roof decking in the Chicago area can range from $3 to $8 per square foot, but this is just a general estimate. The actual cost will depend on the size of your roof, the condition of the existing decking, the type of material used, and the complexity of the job.
For example, if you have a large, multi-story home with extensive damage to the decking, the cost will be on the higher end of the range. On the other hand, if you have a smaller, single-story home with minimal decking issues, the cost may be on the lower end. It's essential to get quotes from local roofing contractors to get an accurate estimate for your specific situation.