Base sheet for self-adhering membranes and selvage roll for such membranes

Abstract

A base sheet for a roof includes a laminate of a metal layer, a core layer and a plastic layer with the metal layer being on one side of the core layer and the plastic layer being on an opposite side. The core layer is made of a polyester non-woven fabric, a polypropylene non-woven fabric, a polyethylene non-woven fabric or a woven or non-woven fiberglass; the plastic is made of polyester, polypropylene, polyethylene or a spun bonded olefin; and the metal of the metal layer is aluminum. A self-adhering membrane is adhered to the laminate. Preferably, the self-adhering membrane includes a mineral surfaced area and a plurality of non-mineral surfaced areas forming selvage strips. The base sheet may be attached to an insulating board in situ or may be attached to the insulating board in a factory. In the latter case, the base sheet has at least two overhanging sides.

What is claimed is:  
     
         1 . A base sheet for a roof comprising a laminate of a metal layer, a core layer and a plastic layer with the metal layer being on one side of the core layer and the plastic layer being on an opposite side.  
     
     
         2 . The base sheet of  claim 1 , wherein the core layer is made of a polyester non-woven fabric, a polypropylene non-woven fabric, a polyethylene non-woven fabric or a woven or non-woven fiberglass.  
     
     
         3 . The base sheet of  claim 1 , wherein the core layer is made of a fabric.  
     
     
         4 . The base sheet of  claim 3 , wherein the fabric is a polyester non-woven fabric, a polypropylene non-woven fabric, or polyethylene non-woven fabric.  
     
     
         5 . The base sheet of  claim 1 , wherein said plastic is made of polyester, polypropylene, polyethylene or a spun bonded olefin.  
     
     
         6 . The base sheet of  claim 1 , wherein the metal of said metal layer is aluminum.  
     
     
         7 . The base sheet of  claim 1 , wherein the metal of said metal layer is aluminum, the core layer is made of non-woven polyester and the plastic is a polyester.  
     
     
         8 . A roll of roofing material comprising a self-adhering membrane having a mineral surfaced area and a plurality of non-mineral surfaced areas forming selvage strips.  
     
     
         9 . The roll of roofing material according to  claim 8 , wherein the self-adhering membrane comprises a self-adhering modified bitumen, a SBS modified bitumen, or an APP modified bitumen.  
     
     
         10 . The roll of roofing material according to  claim 8 , wherein the selvage strips are formed transversely along the membrane.  
     
     
         11 . The roll of roofing material according to  claim 8 , wherein the selvage strips are formed longitudinally along the membrane.  
     
     
         12 . A roof comprising: 
 a deck; and    a laminate of a metal layer, a fabric layer and a plastic layer overlying said deck with the metal layer being on one side of the fabric layer and the plastic layer being on an opposite side attached to the deck; and    a roof covering over the laminate.    
     
     
         13 . The roof of  claim 12 , wherein the core layer is made of a polyester non-woven fabric, a polypropylene non-woven fabric, a polyethylene non-woven fabric or a woven or non-woven fiberglass.  
     
     
         14 . The roof of  claim 12 , wherein said plastic is made of polyester, polypropylene, polyethylene or a spun bonded olefin.  
     
     
         15 . The roof of  claim 12 , wherein the metal of said metal layer is aluminum.  
     
     
         16 . The roof of  claim 12 , wherein the core layer is made of a fabric.  
     
     
         17 . The roof of  claim 16 , wherein the fabric is a polyester non-woven fabric, a polypropylene non-woven fabric, or a polyethylene non-woven fabric.  
     
     
         18 . The roof of  claim 12 , wherein the metal of said metal layer is aluminum, the core layer is made of non-woven polyester and the plastic is a polyester.  
     
     
         19 . The roof of  claim 18 , wherein the roof covering is a built-up roof composite.  
     
     
         20 . The roof of  claim 18 , wherein the roof covering is a single-ply membrane.  
     
     
         21 . The roof of any one of claims  12 - 18 , wherein the roof covering is a self-adhering membrane.  
     
     
         22 . The roof of  claim 21 , wherein the self-adhering membrane comprises a mineral surfaced area and a plurality of non-mineral surfaced areas forming selvage strips.  
     
     
         23 . The roof of  claim 22 , wherein the membrane comprises a modified bitumen, a SBS modified bitumen, or an APP modified bitumen.  
     
     
         24 . The roof of  claim 23 , wherein the selvage strips are formed transversely along the membrane.  
     
     
         25 . The roof of  claim 23 , wherein the selvage strips are formed longitudinally along the membrane.  
     
     
         26 . A method of forming a roof on a deck comprising: 
 placing an insulating layer over said deck;    placing a laminate of a metal layer, a core layer and a plastic layer with the metal layer being on one side of the core layer and the plastic layer being on an opposite side on the insulating layer; and    adhering a self-adhering membrane to the laminate.    
     
     
         27 . The method of  claim 26 , wherein the laminate is placed on the roof deck such that the metal layer faces the deck and wherein the self-adhering membrane is adhered to the plastic layer.  
     
     
         28 . The method of  claim 26 , wherein the laminate is placed on the roof deck such that the plastic layer faces the deck and wherein the self-adhering membrane is adhered to the metal layer.  
     
     
         29 . The method of claims  27  or  28 , wherein the core layer is made of a polyester non-woven fabric, a polypropylene non-woven fabric, a polyethylene non-woven fabric or a woven or non-woven fiberglass.  
     
     
         30 . The method of  claim 29 , wherein said plastic is made of polyester, polypropylene, polyethylene or a spun bonded olefin.  
     
     
         31 . The method of  claim 29 , wherein the metal of said metal layer is aluminum.  
     
     
         32 . The method of  claim 29 , wherein the core layer is made of a fabric.  
     
     
         33 . The method of  claim 32 , wherein the fabric is a polyester non-woven fabric, a polypropylene non-woven fabric, or a polyethylene non-woven fabric.  
     
     
         34 . The method of  claim 29 , wherein the metal of said metal layer is aluminum, the core layer is made of non-woven polyester and the plastic is a polyester.  
     
     
         35 . The method of  claim 34 , wherein the self-adhering membrane comprises a mineral surfaced area and a plurality of non-mineral surfaced areas forming selvage strips.  
     
     
         36 . The method of  claim 35 , wherein the membrane comprises a modified bitumen, a SBS modified bitumen, or an APP modified bitumen.  
     
     
         37 . The method of  claim 36 , wherein the selvage strips are formed transversely along the membrane.  
     
     
         38 . The method of  claim 36 , wherein the selvage strips are formed longitudinally along the  
     
     
         39 . The method of claims  27  or  28 , wherein the self-adhering membrane comprises a mineral surfaced area and a plurality of non-mineral surfaced areas forming selvage strips.  
     
     
         40 . The method of  claim 39 , wherein the membrane comprises a modified bitumen, a SBS modified bitumen, or an APP modified bitumen.  
     
     
         41 . The method of  claim 40 , wherein the selvage strips are formed transversely along the membrane.  
     
     
         42 . The method of  claim 41 , wherein the selvage strips are formed longitudinally along the membrane.  
     
     
         43 . A combined base sheet and insulating layer for a roof, comprising: a laminate including a metal layer, and at least one plastic layer attached to an insulating board such that at least two sides of the laminate overhang two sides of the insulating board.  
     
     
         44 . The base sheet of  claim 43 , wherein said at least one platic layer is made of a spun bonded plastic.  
     
     
         45 . The base sheet of  claim 43 , wherein said at least one plastic layer is made of polyester, polypropylene, polyethylene or a spun bonded olefin.  
     
     
         46 . The base sheet of  claim 1 , wherein the metal of said metal layer is aluminum.  
     
     
         47 . A method of forming a roof on a root deck comprising: 
 providing a plurality of insulating boards having respective laminates of a metal layer and at least one plastic layer attached to the boards, each laminate having at least two overhanging sides; and    placing the plurality of insulating board on the roof deck such that each overhang of a laminate overlaps a side of another insulating board.    
     
     
         48 . The method of  claim 47 , further comprising adhering a self-adhering membrane to the laminate.  
     
     
         49 . The method of  claim 48 , wherein the laminate is placed on the insulating board such that the metal layer faces the insulating board and wherein the self-adhering membrane is adhered to the plastic layer.  
     
     
         50 . The method of  claim 48 , wherein the laminate is placed on the insulating board such that the plastic layer faces the insulating board and wherein the self-adhering membrane is adhered to the metal layer.