10 Best Underlayment For Metal Roof 2025 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 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.