Felting #90 is a heavy-duty asphalt roofing felt designed for use as an underlayment in roofing systems. Weighing 90 pounds per roll, it provides excellent durability and protection against water infiltration. This high-quality felt is commonly used in low-slope roofing applications and areas exposed to harsh weather conditions. Its dense construction offers superior tear resistance, ensuring long-lasting performance throughout the lifespan of the roof. Easy to install, Felting #90 acts as a reliable moisture barrier, enhancing the overall integrity of the roofing structure.