Roof venting system

Abstract

A roof venting system for removing warm and moist air from the interior of a building to the outside through a vent opening in the roof. The system includes a vent, cover member for placement over the vent opening and two foam members through which the indoor warm and moist air must pass when the air flows from the building interior to the outside. The foam members may be provided with a convoluted surface to facilitate close engagement to the roof profile, and a single piece foam may be used instead of the usual two. The foam and cover members may be flexible, reticulated polyurethane treated with one or more substances to enhance fire resistance and protect from heat/cold adverse weather.

1 . A roof venting system for covering a vent opening in the roof extending substantially the length of the roof ridge permitting ventilation from the interior space under the roof to the exterior, the system comprising: a vent cover member covering the vent opening over the length of the opening and overlapping the opening substantially evenly on each side; and a pair of laterally-spaced, flexible, reticulated polyurethane foam members having first and second faces, the second faces engaging one side of the covering strip and the first faces engaging the roof profile.  
   
   
       2 . The system as claimed in  claim 1  wherein the foam members first faces have convoluted surfaces to facilitate the conformation of the convoluted surfaces to the roof profile.  
   
   
       3 . The system as claimed in  claim 1  wherein the foam members are fire retardant.  
   
   
       4 . The system as claimed in  claim 1  wherein the foam members are ultraviolet resistant.  
   
   
       5 . The system as claimed in  claim 2  wherein the foam members are fire retardant and ultraviolet resistant.  
   
   
       6 . The system as claimed in  claim 1  wherein the foam members are homogeneously formed with pores per inch within the range of from 8 to 32.  
   
   
       7 . The system as claimed in  claim 4  wherein the foam members are homogeneously formed with pores per inch within the range of from 8 to 32.  
   
   
       8 . A roof venting system for covering a vent opening in the roof extending substantially the length of the roof ridge permitting ventilation from the interior space under the roof to the exterior, the system comprising: a vent cover member covering the vent opening over the length of the opening and overlapping the opening substantially evenly on each side; and at least one flexible, reticulated polyurethane foam member having first and second faces, the second face red to engaging one side of the covering strip and the first face engaging the roof profile.  
   
   
       9 . The system as claimed in  claim 8  wherein the at least one foam member is expandable to a predetermined length along the roof ridge and overlaps the vent opening.  
   
   
       10 . The system as claimed in  claim 8  wherein the at least one foam member is cut to form an expandable grid.  
   
   
       11 . The system as claimed in  claim 8  wherein the at least one foam member is fire retardant and ultraviolet resistant.  
   
   
       12 . The system as claimed in  claim 8  wherein the at least one foam member is homogeneously formed with pores per inch within the range of from 8 to 32.  
   
   
       13 . The system as claimed in  claim 1  wherein the foam members are coated with flame retardant and ultraviolet resistant acrylic latex.  
   
   
       14 . The system as claimed in  claim 8  wherein the at least one foam member is coated with flame retardant resistant acrylic latex.