Koppers Jute (Burlap) Fabric Koppers Jute (Burlap) Fabric is asphalt saturated. Commonly known as treated burlap, it is a coarse fabric which tends to hold more bituminous roof coating material, resulting in a heavier build-up of coating in fewer applications. It is quite often specified for roofing and waterproofing. Jute is also used for protection of newly seeded areas, embankment erosion control and ditch liners for holding planted materials in place until growth starts.  Return to Reinforcement Fabrics