EXO50 Synthetic Roofing Underlayments deliver a modern, high-performance solution for professional roofing—designed for durability, protection, and speed on the job. This 4 ft x 250 ft roll, sold as a pallet of 42, is proudly made in the United States and backed by a 50-year warranty. Not your grandma's underlayment—it's tougher, lighter, and designed to stand up to the elements.

Key Features & Design

• 50 year warranty. CC-ES ESR-3905. Made in the United States.
• Proprietary non-skid additive on both sides for highest slip resistance.
• Light gray color reduces heat and provides cooler working surface.
• 100% polypropylene woven synthetic is stronger than 30# felt – won’t tear off or buckle when wet.
• Class A Fire Rating as an approved Class A prepared roofing assembly.
• Light - only 28lbs per roll. 10 squares per roll means fewer rolls to carry on the roof.
• UV resistant - can be left exposed for up to 6 months.
• Preprinted nailing pattern and overlap lines to speed installation.
• Approved and warrantied for use under metal roof coverings.
• Recommended installation with STINGER® cap tools and cap fasteners, available in collated StaplePac® and NailPac® or HandDrive cap nails.
• Can save up to 50% in labor cost, compared to 30# felt.
• Pallet of 42 rolls; each roll 4 ft x 250 ft (10 squares per roll).

Whether you’re tackling metal roofs or conventional installations, EXO50 underlayments blend strength, safety, and efficiency. Lightweight yet rugged, they’re designed to keep crews moving, with preprinted marks that reduce guesswork and improve accuracy on every raise. Invest in a modern underlayment that stands up to heat, UV exposure, and the real-world demands of roofing jobs—without breaking the bank.