Embossed fleece materials for roofing underlayments

Abstract

A roofing underlayment comprising an exterior sheet with a fleece material having an embossed texture on a first and/or a second surface thereof. The fleece material comprises polyethylene terephthalate (PET). The exterior sheet may consist of the embossed PET fleece material, or comprise multiple layers which comprise the embossed PET fleece material arranged at an uppermost layer of the exterior sheet. A method of embossing the exterior sheet comprising the PET fleece material is also provided. Embodiments of the method involve using an off-line method of embossment, separate from the fabric production line, or an on-line method of embossment, to emboss the exterior sheet.

1 - 10 . (canceled) 
     
     
         11 . A roofing system comprising:
 a roof deck;   a roofing underlayment comprising
 a first layer comprising a first fleece material, the first layer having an embossed texture on a first surface,
 wherein the embossed texture comprises protrusions and channels between the protrusions, 
 wherein the channels comprise the first fleece material, 
 wherein the first surface is an uppermost surface of the first layer, 
 wherein the first fleece material comprises polyethylene terephthalate (PET), and 
 
 a second layer, opposite to the first layer,
 wherein the second layer contacts a surface of the roof deck; 
 
   a foam adhesive on the first surface of the first fleece material; and   a roofing material on the foam adhesive.   
     
     
         12 . (canceled) 
     
     
         13 . The roofing system according to  claim 11 , wherein the foam adhesive is an expandable polyurethane foam spray adhesive. 
     
     
         14 - 22 . (canceled) 
     
     
         23 . The roofing system according to  claim 11 ,
 wherein the second layer comprises a second fleece material, and   wherein the roofing underlayment comprises:
 a third layer between the first fleece material and the second fleece material of the second layer,
 wherein the third layer comprises a bonding material. 
 
   
     
     
         24 . The roofing system according to  claim 23 , wherein the roofing underlayment further comprises:
 a fourth layer between the first fleece material and the bonding material of the third layer,
 wherein the fourth layer comprises a scrim material. 
   
     
     
         25 . The roofing system according to  claim 24 , wherein the scrim material comprises at least one of fiberglass, polypropylene, and polyethylene. 
     
     
         26 . The roofing system according to  claim 11 , wherein the roofing underlayment comprises a selvage edge. 
     
     
         27 . The roofing system according to  claim 11 , wherein the roofing material comprises a roofing tile. 
     
     
         28 . The roofing system according to  claim 11 , wherein the foam adhesive comprises a polyurethane-based foam. 
     
     
         29 . The roofing system according to  claim 11 , wherein the foam adhesive comprises an expandable foam adhesive. 
     
     
         30 . The roofing system according to  claim 11 ,
 wherein the second layer comprises a second fleece material, and   wherein the roofing underlayment comprises:
 a third layer between the first fleece material and the second fleece material of the second layer. 
   
     
     
         31 . The roofing system according to  claim 11 , wherein the foam adhesive comprises a polyurethane-based foam, and
 wherein the roofing material comprises a roofing tile.   
     
     
         32 . The roofing system according to  claim 11 , wherein the foam adhesive comprises an expandable foam adhesive, and
 wherein the roofing material comprises a roofing tile.