
Roofing Felt ASTM D4869 Asphalt Roofing Underlayment Asphalt Roll Roofing Membrane. ASTM D4869 Compliance: Meets ASTM D4869 standard for asphalt roofing underlayment with high tear strength. Waterproof Vapor Barrier: Impervious to water penetration while allowing restricted water vapor passage. High Tear Strength: Heavy-weight organic mat with high asphalt saturation for durability. Flexible Installation: Preconditioned to lay flat and remain stable on roof decks. Customization Available: OEM and ODM services welcome with flexible customization options. Versatile Application: Suitable for pitched roofs, temporary covers, and permanent underlayment. Standard Packaging: Rolled in blank craft paper and loaded on pallets for protection. Long Service Life: Durable waterproof material designed to last over 20 years.