The answer to 'underlayment warranty' is that the warranty on roofing underlayment can vary significantly depending on the product and manufacturer. Many standard asphalt-based underlayment products come with a limited warranty of 6 to 12 months, while higher-quality synthetic underlayments may have warranties of 10 to 20 years. The warranty covers the underlayment's performance and resistance to weathering, tearing, and other damage during the specified time period.
It's important to carefully review the warranty details and understand what is and isn't covered before selecting an underlayment. Proper installation according to the manufacturer's instructions is also crucial to ensure the warranty remains valid. If you have any concerns or questions about the underlayment warranty, it's best to consult with a professional roofing contractor who can provide guidance specific to your project.