10 Best Underlayment For Metal Roof 2025 in the United States

The SIPA 100 GSM Synthetic Waterproof Roof Underlayment is designed for both residential and commercial roofs, including metal roofing applications. It uses a non-woven polypropylene material laminated with polyethylene, which makes it waterproof and durable. Its 100 GSM thickness provides a solid barrier without being too bulky, balancing protection and ease of handling. One of its strong points is its excellent water resistance, ensuring your roof stays dry under harsh weather conditions. It also offers UV resistance for up to 60 days, which is helpful during installation before the final roofing goes on.

The material is stable and won’t buckle, warp, or crack, which means it maintains a smooth surface beneath shingles or metal sheets. Installation should be straightforward for most users since it comes in a large 48-inch wide roll that covers 1,000 square feet, minimizing the number of seams and overlaps. The product meets key industry standards (ASTM D4869, ASTM D226) and has relevant approvals, reflecting its reliability.

Weighing 80 pounds per 10-roll package, it might be somewhat heavy to handle alone, which could make installation more challenging for some. For those seeking a dependable, waterproof underlayment with good UV protection and sturdy material suitable for metal or asphalt roofs, this product is a strong choice. It is advisable to plan ahead for its weight and size during installation.

The ZIP System Peel and Stick Underlayment is designed to offer robust protection against leaks and water damage, making it suitable for areas prone to ice dams or heavy rain, such as eaves and valleys. The material used is a high-performance rubberized asphalt, which is known for its durability and ability to seal around nails, enhancing its water resistance.

With a slip-resistant surface, this underlayment is relatively easy to install, even for those with less experience in roofing projects. Its maximum service temperature of 260 degrees Fahrenheit ensures that it can withstand high temperatures without degrading, adding to its reliability over time.

Its bulky size (66.7 x 1 x 0.04 inches) and weight (51 pounds) might make it difficult to handle for some users. Those with moderate to heavy roofing needs, especially in climates with significant ice or rain, will likely benefit the most from this underlayment.

The Titanium PSU30 Peel & Stick Roof Underlayment is designed for durability and performance, especially suited for metal roofs. Made by INTERWRAP, it features a watertight asphalt lap system, ensuring strong water resistance, which is crucial in keeping your roof protected from leaks. Its thickness of 45 mils adds to its robustness and effectiveness in providing a solid layer of protection. One standout feature is its all-temperature performance, functioning well in extreme temperatures from -40°F to 240°F. This makes it versatile for various climates.

Additionally, it offers UV resistance for up to 6 months, which is beneficial if the underlayment is exposed to sunlight before the roof installation is complete. The SURE-FOOT slip-resistant technology makes installation safer and easier, which is a significant advantage for those doing the work themselves or concerned about job site safety. However, at 48 pounds per roll, it might be somewhat heavy to handle during installation. The dimensions of each roll are 72 feet long and 36 inches wide, covering a substantial area of 2 square feet per roll.

While it ranks #75 in Flooring Underlayments, it might not be the top choice for everyone, especially if lighter or more budget-friendly options are preferred. If you need a reliable and robust underlayment for a metal roof, this product appears to meet those needs effectively.