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 Ice & Water Shield Roofing Underlayment is a robust and reliable option for those looking to protect their metal roofs from ice dams and wind-driven rain. With a coverage of 225 square feet, this product offers a durable shield, crucial for long-term roof integrity. One of its standout features is its superior water-tight laps and high-quality seal around fasteners, ensuring exceptional water resistance which is critical in preventing leaks and water damage. It is also designed to handle extreme temperatures, adding to its versatility and reliability in various climates.

The installation ease is generally good, but its heavy weight of nearly 40 pounds might make handling a bit challenging for some users. The product dimensions are quite manageable, making it suitable for various roof sizes. Manufactured in China, it offers a balance of quality and cost-effectiveness.

The Grace Ice & Water Shield Roofing Underlayment is a solid choice for those needing dependable water resistance and durability, though potential buyers should consider the ease of installation and whether additional UV protection is necessary for their situation.

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.