The answer to 'how much does underlayment cost in Chicago' is that the cost of underlayment can vary significantly depending on factors like the type of underlayment, the size of the roof, and the local market conditions. In general, homeowners in the Chicago area can expect to pay anywhere from $1 to $5 per square foot for basic asphalt-based underlayment materials.
The specific cost will depend on the quality and features of the underlayment product, such as whether it provides extra protection against water, ice, or fire. Higher-end synthetic or rubberized underlayments may cost more per square foot but can offer enhanced durability and performance. It's important to get quotes from multiple local roofing contractors to compare pricing and find the best value for your home.