WATER FLOW CONTROLLER AND DEBRIS SEPARATOR FOR ROOF VALLEYS

摘要

Apparatus and method for controlling flow of water from a roof valley into guttering comprising: a generally rectangular, generally planar piece of stock material having two substantially parallel side edges, a back end edge and a right-angle V-shaped front edge, an area of the material that is perforated with a plurality of open slots for allowing rainwater but not debris therethrough; and a front wall that extends downward at the front edge. Sidewalls with vertical slits extend downward at the side edges for raising the stock material above the roof surfaces. Pleats in the front wall enable a preferred installation method that laterally curves the stock material, depressing a longitudinal centerline below the side edges. The method further includes trimming the sidewalls to decrease in height front to back to allow inserting the back end under singles, and securing the front wall within an outward wall of the guttering.