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 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 MFM Peel & Seal Self Stick Roll Roofing is designed specifically for users looking for an effective underlayment solution for metal roofs. One of its key strengths is its waterproof seal, which is essential for protecting your roof from leaks and moisture. The material is aluminum, ensuring durability, and its thickness of 45 mils offers a solid barrier against the elements. Additionally, this product is easy to install; it sticks to almost any surface without the need for additional adhesives, making it a great option for DIYers. It's particularly beneficial for those with RVs and trailer homes due to its compatibility with low slope and low pitch roofs.

The roll length of 33 feet 6 inches might be limiting for larger projects, meaning multiple rolls could be necessary.

The MFM Peel & Seal is a strong choice for those in need of reliable underlayment for low slope metal roofs, especially for smaller applications or recreational vehicles. However, potential buyers should keep in mind the environmental conditions they are working in and plan their material needs accordingly.