Slopped roof flashing system and method of use

Abstract

A flanged counter flashing unit, flashing system and method is described for weather proofing the juncture of a brick wall overlying a vertical parapet wall and the edge of a sloped roof. The one-piece counter flashing unit of the flashing system has a vertical slit into which is securely fitted the low upstanding side of a J-Channel flashing positioned at the juncture and the vertical leaf member of an L-shaped roof flashing that is flush with the outer face of the upstanding low side of the J-Channel flashing, including a flange section of the counter flashing unit that extends laterally from the top edge of the counter flashing apron and partially over the J-Channel and an apron adapted for overlying the vertical leaf member of the L-shaped flashing. The J-Channel flashing, L-shaped flashing and flanged counter flashing are included in the flashing system of the present invention. According to the method of the present invention, when the flashing system is positioned at the juncture, the brick wall is constructed from within the J-channel so that the counter flashing flange is included in the brick wall. This method eliminates the need for a separate method step of attaching counter flashing to the brick wall at an angle to the horizontal plane of the brick wall after its construction by means of a gouge cut across the brick wall for that purpose.

1 . An interfitting roof transition flashing system for installation to a building at a juncture between a vertical masonry wall and an edge of a slopped roof comprising: a J-Channel flashing and a one-piece flanged counter flashing, said J-Channel flashing having a high upstanding side and a low upstanding side that are separated by a pan section forming a channel for constructing a vertical masonry wall from within said channel, said flanged counter flashing having an apron adapted to overlie the vertical leaf section of an L-shaped roof flashing that is positioned at the edge of said slopped roof and flush with the outer face of said low side of said J-channel flashing and a flange extending generally laterally from the upper edge of said apron and partially over said J-Channel, said flange being turned downwardly upon itself in the manner of a hairpin to form a lip from which a vertical planar section extends downwardly in substantially parallel and spaced relationship to said apron forming a slit there between, so that when said roof transition flashing system has been installed said low side of said J-Channel flashing and vertical leaf section of said L-shaped roof flashing are securely fitted inside said slit.  
   
   
       2 . The interfitting roof transition flashing system of  claim 1  wherein said apron terminates with an obtusely angled flange bent in the direction of said vertical leaf section of said L-shaped roof flashing.  
   
   
       3 . The interfitting roof transition flashing system of  claim 1  wherein the interior of said J-Channel flashing is coated with a polymeric material.  
   
   
       4 . The interfitting roof transition flashing system of  claim 1  wherein said vertical masonry wall is composed of brick and mortar.  
   
   
       5 . A method of counter flashing a vertical leaf section of an L-shaped roof flashing positioned at the juncture between the edge of a slopped roof and a vertical masonry wall and flush with the outer face of the low upstanding side of a J-Channel flashing, eliminating the need for cutting into the masonry wall and attaching counter-flashing to overlie said vertical leaf section after construction of the masonry wall, which comprises: 
 interfitting said J-Channel upstanding low side and said vertical leaf section with a one-piece flanged counter flashing in order to overlie said vertical leaf section prior to construction of said masonry wall, said counter flashing having an apron adapted to overlie said vertical leaf section and a flange extending generally laterally from the upper edge of said apron and partially over said J-Channel, said flange being turned downwardly upon itself in the manner of a hairpin to form a lip from which a vertical planar section extends downwardly in substantially parallel and spaced relationship to said apron forming a slit there between, so that said low upstanding side of said J-Channel flashing and vertical leaf section of said L-shaped roof flashing are securely fitted inside said slit prior to construction of said masonry wall; and    constructing said masonry wall from within said J-Channel and including said flange as an integral component of said masonry wall.    
   
   
       6 . The method of  claim 5  including coating the interior of said J-Channel flashing with a polymeric material prior to installation.  
   
   
       7 . The method of  claim 5  including an obtusely angled flange bent in the direction of the vertical leaf section of said L-shaped roof flashing at the terminus of said apron.  
   
   
       8 . The method of  claim 5  wherein said masonry wall is composed of brick and mortar.  
   
   
       9 . A one-piece counter flashing adapted for interfitting with the low upstanding side of a J-Channel flashing and a vertical leaf section of an L-shaped roof flashing that is flush with the outer face of said low upstanding side of said J-Channel flashing for application to the juncture between a vertical masonry wall and the edge of a slopped roof comprising: an apron adapted to overlie said vertical leaf section and a flange extending generally laterally from the upper edge of said apron, said flange being turned downwardly upon itself in the manner of a hairpin to form a lip from which a vertical planar section extends downwardly in substantially parallel and spaced relationship to said apron forming a slit there between, so that when said one-piece counter flashing has been installed said J-Channel flashing low side and said vertical leaf section are securely fitted inside said slit and said flange extends partially over said J-Channel flashing.  
   
   
       10 . The one-piece counter flashing of  claim 9  wherein said apron terminates with an obtusely angled flange bent in the direction of the vertical leaf section of said L-shaped roof flashing.  
   
   
       11 . The one-piece counter flashing of  claim 9  wherein said vertical masonry wall is composed of brick and mortar.