Abstract: An underlayment material made of a laminate of a nonwoven thermoplastic fabric having a dimensional stability of less than 1% when exposed to a temperature of 82° C. when tested in accordance with ASTM D 1204 in both machine- and cross-directions and a thermoplastic barrier layer provides a combination of an improved dimensional stability, resistance to sliding along a roof deck and protection as a moisture barrier when used in roofing and flashing structures.

Abstract: A discontinuous manufacturing process performs at least one processing step on a web of material unwound from a roll, applies an indicator code to the unwound web of material for indicating at least one finishing step the web of material is to be subjected to, rewinds the web of material having the indicator code on another roll and then transfers the rewound web of material to a remote finishing facility. At the remote finishing facility, the web of material is again unwound and transported towards a finishing station. The indicator code on the web of material is read at the finishing station and then directed to a location where an appropriate finishing step is performed on the web of material prior to it being rewound on a roll to form a product roll.