RED ROSIN PAPER is a high quality, single-ply sheathing paper, which is widely used in built-up roofing systems as a “first layer” protective barrier. This environmentally friendly paper is manufactured from 100% recycled fibers. The fibers are set in alum to resist bleeding. It is a multi-purpose building paper used as a physical barrier protection throughout all phases of general construction. RED ROSIN PAPER is useful in a wide variety of construction applications, including roofing, flooring, and as a general jobsite protective covering. When used as an inner liner in wall, roofing, or wood flooring applications, RED ROSIN PAPER acts as a separation barrier, protecting against wind and dust infiltration, while minimizing squeaks. It is compatible with coal tar and asphalt-based roofing systems.