Roof vent and roof ventilation system

Abstract

This application relates to roof vents with diverters that prevent or reduce the likelihood that water or other debris can be driven through the vent by wind. For example, a roof vent can include a lower portion and an upper portion attached to the lower portion at an upslope edge, the upper portion angling away from the upslope edge to create a space therebetween. The roof vent can also include a front opening between the lower portion and the upper portion at a downslope edge of the upper portion to allow airflow into and out of the space. The roof vent can include a diverter positioned downslope of the front opening and attached to the lower portion for preventing or reducing the likelihood that water or other debris can be driven through the vent by wind.

We claim: 
     
         1 . A roof vent for a building having a roof deck with one or more ventilation apertures therethrough, the roof vent comprising:
 A vent body having an upslope edge and a downslope edge, the vent body formed by a vent cover secured to a sub-flashing forming a vent cavity therebetween and a downslope vent opening along the downslope edge of the roof vent, the sub-flashing including a ventilation opening in fluid communication with at least one of the ventilation apertures, the vent cavity and the downslope vent opening;   a diverter integrated into the downslope edge of the sub-flashing, the diverter downslope of the downslope vent opening   
     
     
         2 . The roof vent of  claim 1  wherein the diverter has a height of at least one inch 
     
     
         3 . The roof vent of  claim 1  wherein the diverter is positioned downslope of the downslope vent opening at least a distance that is at least one of about 85%, 90%, 95%, 100%, 105%, 110%, or 115% of a height of the front opening. 
     
     
         4 . The roof vent of  claim 1 , wherein the space between the vent cover secured to a sub-flashing is bounded by side walls on lateral edges. 
     
     
         5 . The roof vent of  claim 1  wherein the diverter has a height of no more than 1.75 inches. 
     
     
         6 . The roof vent of  claim 1  wherein the roof vent is a flat tile vent. 
     
     
         7 . The roof vent of  claim 1  wherein the roof vent is an M-shaped vent. 
     
     
         8 . The roof vent of  claim 1  wherein the roof vent is an S-shaped vent. 
     
     
         9 . The roof vent of  claim 1  wherein the roof vent is a tapered composition vent.