Abstract: A roof ridge vent has a pair of opposed, spaced-apart, elongate strips of ventilation material providing ventilation passageways transversely therethrough and forms opposed longitudinally-extending sides of the vent. The elongate ventilation strips are interconnected by a plurality of supports extending transverse relative to the elongate ventilation strips. Each adjacent pair of supports defines an opening therebetween such that an underlying roof surface is visible to an installer through the openings. A vent assembly and method of installation are provided.

Abstract: A ridge vent, roof ridge vent installation, and method of installing a ridge vent is provided. Preferably, the ridge vent includes a ventilation material that has opposite longitudinally-extending sides and a longitudinally-extending central section that is transparent. The transparent central section simplifies and enables accurate placement of the vent on the roof ridge.

Abstract: A ridge vent, roof ridge vent installation, and method of installing a ridge vent is provided. Preferably, the ridge vent includes a ventilation material that has opposite longitudinally-extending side edges that are covered with an air permeable filter material. A longitudinally-extending central section of the vent is not covered by the air permeable filter material, is transparent, and enables a ventilating air flow to pass through the vent in a manner requiring only a single pass through the air permeable material. This permits greater air flow through the vent, and the transparent central section simplifies and enables accurate placement of the vent on the roof ridge.

Abstract: A roll-form roof ridge vent having alignment means to facilitate ease of installation. The indeterminate-length, single-sheet vent is provided with a pliable medial hinge strip, or a set of expandable live hinges, which enable the otherwise straight vent to be laterally and/or angularly repositioned from its substantially straight configuration. Thus, lateral adjustments can be made to the positioning of the vent as it is being installed so that the vent is centered throughout its length over the roof ridge. The lateral adjustments do not result in buckling of the vent or unwanted distortion.

Abstract: A roll-form roof ridge vent having a plurality of hollow cusps and a reinforced nail line. The cusps space the upper surface of the vent from the underlying roof to provide a path of ventilation therebetween. The reinforced nail line permits the use of standard pneumatic roofing nail guns to apply nails to the vent and overlying cap shingles. The reinforced vent resists compression and prevents nail heads of nails driven into hollow cusps of the vent from sinking past the upper surface of the vent. The nail line reinforcement material can be a fabric, elastomeric or other type of material.

Abstract: An improved roll-form vent for buildings comprises a sequentially thermoformed polymeric vent which provides multiple venting air flow paths between the interior of a building and ambient atmosphere. The vent includes projections extending from a web and a plurality of vent openings that cooperate with screening to bar entry into the building of water, insects and foreign matter. A method of making the vent includes steps of providing a web of material of indeterminate running length, heating the web, sequentially thermoforming the web, cooling the web and rolling the formed vent for storage, shipment and use.