Patent ID: 7858174

Claim:
A drainage-promoting wrap, comprising: an elongate strip of weather-resistive membrane storable in a spiral roll; and a series of separate, laterally spaced-apart, elongate spacers bonded to a face of said weather-resistive membrane, said elongate spacers being polymeric filaments; each of said separate, laterally spaced-apart, polymeric filaments being of a thickness that projects to a predetermined height from said face of said membrane and having a series of depressions formed therein that do not extend to said predetermined height and that provide a series of drainage paths transversely across said filaments; and each of said separate spaced-apart polymeric filaments being a continuous extruded filament that extends in a longitudinal direction on said elongate membrane, including an alternating array of said depressions and full-size filament sections, and being free from intersection with any other filament on said membrane.