The Heavy-weight Stitchbonded Polyester Fabric with a medium soft finish. Stitchbonded Polyester Fabric has excellent strength and elongation. Stitchbonded Polyester Fabric has more and closer stitches which may require increased brooming to insure proper embedment and removal of all air pockets. Stitchbonded Polyester Fabric has good conformability on smooth or semi-smooth surfaces. This product works well when used over cap sheet, smooth and spudded or filled gravel roofs.