The answer to 'how much does underlayment cost in my area' is that the cost of underlayment can vary significantly depending on your local market and the specific type of underlayment you need. Underlayment is a critical component of a roofing system, providing a protective layer between the roof deck and the outer roofing material.
Factors that can influence the cost of underlayment include the material (e.g., asphalt-based, synthetic, or felt), the thickness, the brand, and the availability in your local area. In general, you can expect to pay anywhere from $0.50 to $2 per square foot for basic underlayment materials. However, getting quotes from local roofing suppliers or contractors is essential to determine the exact cost in your area.