Membrane having a cured coating layer

Abstract

A chemically coated roofing membrane assembly includes a membrane and a chemical coating on at least a portion of one surface of the membrane. In one or more embodiments, the chemical coating may be provided along the top surface of the membrane adjacent to a longitudinal edge of the membrane, and along the bottom surface of the membrane adjacent to a second longitudinal edge of the membrane. The chemical coating is cured, and may be formed from acrylic or urethane chemical compositions. The chemically coated roofing membrane eliminates the need for in-field priming of the membrane.

1 . A method of installing a membrane assembly on a roof surface comprising:
 positioning a first membrane assembly on the roof surface, the membrane having a top surface, a first longitudinal edge, and a cured-coating layer along the first longitudinal edge of the top surface;   positioning a second membrane assembly on the roof surface, the membrane having a bottom surface, a second longitudinal edge, and a cured-coating layer along the second longitudinal edge of the bottom surface, wherein the second membrane assembly overlaps the first membrane assembly;   applying an adhesive tape to the cured-coating layer of one of the first membrane assembly and the second membrane assembly; and   pressing the cured-coating layer of the other of the first membrane assembly and the second membrane assembly against the adhesive tape to form a lap seam between said first membrane assembly and said second membrane assembly.   
     
     
         2 . A method of installing a membrane assembly on a roof surface according to  claim 1 , wherein the removal of a release liner from a membrane is not required. 
     
     
         3 . A method of installing a membrane assembly on a roof surface according to  claim 2 , wherein applying a primer to the membrane is not required. 
     
     
         4 . A method of making a membrane having a cured-coating layer comprising:
 extruding a membrane;   applying a coating composition to at least part of the membrane to form a coating layer; and   curing the membrane and the coating layer to form a cured-coating layer on the membrane.   
     
     
         5 . A method of making a membrane according to  claim 4 , further comprising the step of allowing the coating layer to dry after the coating composition is applied on the membrane, wherein the coating layer is substantially non-tacky after drying. 
     
     
         6 . A method of making a membrane according to  claim 5 , further comprising the step of dusting the membrane having the coating layer with a dusting agent after the coating layer has dried and before the step of curing. 
     
     
         7 . A method of making a membrane according to  claim 6 , further comprising the step of winding the membrane into a roll after the step of dusting the membrane and before the step of curing. 
     
     
         8 . A method of making a membrane according to  claim 4 , wherein the coating composition is applied to the membrane using a metered priming rod. 
     
     
         9 . A method of making a membrane according to  claim 4 , wherein the step of curing the membrane is performed by subjecting the membrane to UV light.