Roof ridge vent system

Abstract

A roof ventilation system for asphalt shingle or composition roofs which include a vent slot located through the roof structure along a roof ridge is provided. An unrollable vent assembly that is installable in one piece is formed from an upper water barrier having first and second vent arrangements connected thereto, and each of the first and second vent arrangements include at least two longitudinal strips of a vent material with a longitudinally extending space therebetween. The strips of vent material and the longitudinally extending space are positionable on the roof parallel to the ridge so that the first and second vent arrangements are located on each side of the ridge vent slot, respectively. The vent system prevent ingress of moisture and debris, and the upper water barrier extends between the first and second vent arrangements and over the vent slot in the installed position.

1 . A roof ventilation system for asphalt shingle or composition roofs which include a vent slot located through the roof structure along a roof ridge, comprising: 
 an unrollable vent assembly installable in one piece, comprised of an upper water barrier having first and second vent arrangements connected thereto, each of the first and second vent arrangements include at least two longitudinal strips of a vent material with a longitudinally extending space therebetween that are positionable on the roof parallel to the ridge, the first and second vent arrangements are locatable on each side of the ridge vent slot, respectively, to prevent ingress of moisture and debris, and the upper water barrier extends between the first and second vent arrangements and over the vent slot in the installed position.    
   
   
       2 . The roof ventilation system according to  claim 1 , further comprising at least one ridge cap placed over the vent assembly, whereby the water barrier is located between the ridge cap and the first and second vent arrangements.  
   
   
       3 . The roof ventilation system according to  claim 2 , wherein first and second ends of the ridge cap extend past respective down slope surfaces of the strips of vent material located on a down slope sides of the vent assembly in directions opposite the vent slot.  
   
   
       4 . The roof ventilation system according to  claim 3 , further comprising fasteners driven through the ridge cap and respective ones of the strips of vent material located on the down slope sides of the vent assembly to attach the ridge cap and the vent assembly to the roof.  
   
   
       5 . The roof ventilation system according to  claim 1 , wherein the water barrier is bonded to the strips of vent material.  
   
   
       6 . The roof ventilation system according to  claim 1 , wherein the strips of vent material are comprised of a non-woven mesh.  
   
   
       7 . The roof ventilation system according to  claim 11 , wherein the non-woven mesh material is a synthetic fiber web treated with at least one binding agent.  
   
   
       8 . The roof ventilation system according to  claim 1 , wherein the strips of vent material include an adhesive applied thereon for securing the vent assembly to the surface of the roof.  
   
   
       9 . The roof ventilation system according to  claim 8 , wherein the adhesive is a pressure sensitive strip adhesive having a removable backing which exposes the pressure sensitive adhesive.  
   
   
       10 . The roof ventilation system according to  claim 1 , wherein the strips of vent material adapted to be located along the ridge vent slot includes a water dam connected thereto which extends along a length of the respective vent strip, for preventing ingress of water.  
   
   
       11 . The roof ventilation system according to  claim 10 , wherein the water dam comprises an adhesive or a potting compound located on the strip of vent material adapted to be located along the ridge vent slot.  
   
   
       12 . The roof ventilation system according to  claim 1 , wherein the upper water barrier is at least one of polyvinyl chloride and a closed cell foam.  
   
   
       13 . A method of improving ventilation to a building comprising: 
 providing a roof having a surface and at least one vent slot disposed along a roof ridge,    applying a vent assembly to the roof, the vent assembly comprising an unrollable vent assembly installable in one piece, having an upper water barrier with first and second vent arrangements connected thereto, each of the first and second vent arrangements include at least two longitudinal strips of a vent material with a longitudinally extending space therebetween and positioning the vent assembly so that the strips of vent material and the longitudinally extending space are parallel to the ridge with the first and second vent arrangements located on each side of the ridge vent slot, respectively, to prevent ingress of moisture and debris, with the upper water barrier extending between the first and second vent arrangements and over the vent slot.    
   
   
       14 . The method of  claim 13 , further comprising: 
 installing cap shingles over the upper water barrier.