The roof underlayment is actually a layer positioned between the sheathing and shingles. It’s an extra moisture barrier that protects your roof decking from drinking water that may be positioned underneath the shingles. The underlayment is available in the 3 forms shown underneath: Asphalt shingles are the commonest roofing substance, https://house-challenge.com/5-ways-to-get-affordable-roofing-services-in-aurora-illinois-insider-tips-and-tricks/