10 Best Underlayment For Metal Roof 2026 in the United States

The ZIP System Peel and Stick Underlayment is designed to protect metal roofs from water damage, especially in vulnerable spots like eaves and valleys where ice dams and wind-driven rain are common. It’s made with a rubberized asphalt material that creates a strong, waterproof seal around nails, which helps prevent leaks effectively. The product is quite thin at 0.04 inches, making it lightweight and easy to handle during installation, and its slip-resistant surface adds safety while working on the roof.

It can withstand temperatures up to 260°F, which is helpful if you live in a hot climate or if the roof surface gets very warm. While UV resistance isn’t specifically mentioned, underlayments like this are typically covered by the metal roofing itself, so long sun exposure is usually not a big concern. The self-adhesive backing makes it quicker to install compared to traditional felt paper, saving time and effort.

One possible downside is that it may be heavier than some alternatives at 51 pounds due to its dense material, though this weight also suggests durability. This underlayment meets building codes for ice and water barriers, giving extra confidence in its reliability. If you want an easy-to-apply, waterproof layer to add protection under your metal roof, this product offers solid performance with a focus on durability and temperature tolerance.

The Grace Self Adhering Ice and Water Shield Roof Underlayment HT is designed to protect roofs, including metal ones, from water damage and harsh weather. It’s made from a rubberized asphalt material with a tough polyethylene film that sticks firmly to surfaces, helping it seal tightly around nails or fasteners. This self-adhesive feature means installation is relatively straightforward, without needing extra adhesives or fasteners. The underlayment is 40 mils thick, which offers solid protection and durability.

It can tolerate high temperatures, making it suitable for use under metal roofs that can get hot under the sun. Additionally, it resists UV exposure for up to 120 days, so it won’t degrade quickly if left uncovered during installation or delays. The slip-resistant surface also adds safety for installers working on inclined roofs. One thing to keep in mind is the roll weight—over 50 pounds per roll—so handling might be a bit heavy for some users.

While it offers good water resistance and sealing around fasteners, the product is primarily designed for ice and water protection rather than as a complete vapor barrier, which might be important depending on your climate. With a strong tensile strength membrane, it holds up well under stress, supporting long-term roof integrity. This product is a solid choice for homeowners or contractors looking for a reliable, high-temperature underlayment with enhanced adhesion and protection beneath metal roofing.

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.