Frequently Asked Questions
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Latest Frequently Asked Questions Articles
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Air Vent does not recommend mixing two types of exhaust vents on the same roof when it’s a common attic because it could result in short-circuiting the attic ventilation system in which one
...Air Vent does not recommend the Hip Vent with plank style decking. Once the planks are cut, there is no horizontal support on the hip ridge, so it will flex and weaken terribly. Any attempts at
...Yes. It is the installer's responsibility to ensure that there is a downward slope across all shingle surfaces after Edge Vent installation. This is of particular note when using multi-layered or
...Snow is porous. A snow-covered ridge vent will still allow warm air to escape through the vent. Air Vent has a vivid photograph submitted by a contractor in New England clearly showing this.
The Hip Ridge Vent can be exposed to wind in ways that peak (horizontally positioned) ridge vents are not, in that the wind will not simply be blowing across the vent but also on top of the vent.
...The Hip Ridge Vent has integrated ventilated end caps at both ends of each 4’ piece. There is no need for any type of foam to be applied to the ends of the vent to create a finished look.
As long as the nail fully penetrates the roof deck any variety of standard roofing nail will work. A nail gun can be used as long as the installer checks the nail gun pressure to ensure the nails
...The Hip Ridge® Vent is a brand new product to the marketplace from Air Vent, Inc. We are currently in the process of performing testing (internally and externally) for compliance with external
...It is identical to ShingleVent II and The Edge Vent: Lifetime limited warranty and a 5-year Replacement Plus™ Protection.
Determine the amount of intake and exhaust volume using the online calculator at www.airvent.com. You can do this manually by finding out the attic square footage and dividing by 150. Then divide
...Transitioning or blending should be done by a roofing contractor based on the architectural style of the roof. Cutting out or removing the internal support of the Hip Ridge Vent (the underside of
...This is not a recommended application.
Connect the two ridge vents. Miter cutting the Hip Ridge Vent using tin snips or a utility knife is the recommended method. The step-by-step process is detailed in the installation
...It is necessary to stagger the slots in different lengths to maintain the structural integrity of the roof deck.
If the slot is properly cut in width and length according the installation instructions you will not reduce the vent’s Net Free Area. The only case in which a staggered slot can reduce the
...The slot WIDTH is identical to ShingleVent II. There are pre-marked lines at the top of the vent to guide you with marking the roof deck appropriately based on truss or ridge pole construction
...Each injection molded piece is four feet long. Please refer to the specification drawing for additional details.
The Hip Ridge Vent should never be used on buildings with an overall width (eave to eave measured horizontally) greater than 50 feet. The net free area (12″) will drop below the 1/300
...From 5:12 up to 16:12 for common rafter roof pitch. Adjacent decks forming the hip ridge must be greater than or equal to 3:12.
Black is the only color available at this time.
Ten pieces come in one carton of Hip Ridge Vent.
The Net Free Area is 12 square inches per linear foot (NFA). The reduction of Net Free Area from ShingleVent II and VenturiVent Plus results from both a lower profile and the integrated gasket
...No. The Edge Vent is not designed to be used as an exhaust vent. It does not have an external baffle that Air Vent exhaust ridge vents do. Without the external baffle the vent would be subject to
...Yes, it is acceptable to install The Edge Vent up the roof a few feet from the roof's edge to provide intake ventilation for an attic that begins further up the roof, as in an exposed rafter tail
...The Edge Vent is not Class A. Perhaps one day Air Vent will have it tested/rated as such.
The use of The Edge Vent at the roof transition for a gambrel roof should be acceptable. NOTE: The deck below The Edge Vent at the roof transition line will have to be protected. The contractor
...No, it’s not recommended that The Edge Vent be used up the roof as an attic ventilation exhaust vent. The product was specifically designed for intake venting applications.
Install insulation baffles in every rafter bay to create an air space between the insulation and the underside of the roof deck. For situations where there may be limited or no access to the
...Air Vent has not tested the compatibility of gutter protection products in general with The Edge Vent.
In a quick review of the Leaf Proof gutter protection product, Air Vent does not
...There are a couple concerns:
The top flange of the Pro Flow Vented Drip Edge is approximately 6.5”. The slot for The Edge Vent is supposed to be cut between 5” and
...Air Vent does not recommend the use of The Edge Vent for this application where a sloped roof meets a flat roof. Not only is there an increased possibility for infiltration, the vent would be
...Air Vent has not performed an installation with slate roofing. It is possible that it could work, but Air Vent has not investigated all of the possible installation details that would need to be
...Air Vent has not looked at this application in detail, but it could possibly work. Underlayment will have to cover the product regardless of the roof covering material. It should be able to
...Yes, it’s OK to use The Edge Vent on one side of the house and use a different type of intake vent on the other side of the house. This will not cause any problems for the overall attic
...Yes, it is OK to use The Edge Vent in conjunction with all existing intake vents on the same side of the house (whatever type of intake vents they happen to be) because they will all be in the
...When using The Edge Vent with vented nail base products, there are a few things to consider:
Is there an attic space below the vented nail base which is desired to be vented? If so, is
...The Edge Vent can be installed on roofs with a minimum 3/12 roof pitch. There is no maximum roof pitch.
There are three possible options in dealing with open valley installations of The Edge Vent.
Option 1: Position The Edge Vent so that it terminates 2 feet from the open valley
...Yes, as with most building construction practices, there is some latitude with the precise slot dimensions to be cut. It is recommended that the lower cut for the slot be maintained as close as
...Air Vent has never specified the gutter size for use with its product and will not do so with The Edge Vent because of the infinite variables that are structure specific. Obviously, the drip edge
...It may be possible that a roofing inspector would red flag a slot opening in the roof deck in an area required to have a waterproofing underlayment from the edge of the roof up to at least
...If they are both covered, then there will be no attic ventilation. Eventually, the snow will clear from both the peak and the eave and the attic ventilation system will be functioning once again.
...Air Vent will not specify a particular fastener to be used for the installation of The Edge Vent or for shingles installed over the product because of possible variations in the construction
...The integrated end plugs of The Edge Vent terminate each end of the vent to help prevent weather infiltration. The end plug feature is essentially a vertical rib with a top edge that matches the
...Air Vent will not specify what materials are to be used beneath The Edge Vent in any climate. However, it is recommended that waterproofing underlayment or a similar performing product be used
...With regard to the placement of underlayment, Air Vent recommends it be placed both under The Edge Vent (i.e. directly on the deck) and over The Edge Vent. NOTE: The slot should also be cut into
...No, every brand of shingle will not correctly align on The Edge Vent in terms of nailing requirements. Even if they did, Air Vent would not make that claim because we do not control shingle
...In terms of structural integrity, The Edge Vent will perform similarly to Air Vent’s ShingleVent® II ridge vent, which is the same exact copolymer resin material as The Edge Vent.
...No, The Edge Vent was designed to shed water at these roof pitches. Any water will be traveling from the peak of the roof all the way down to the edge of the roof with increased speed and volume.
...Air Vent’s 20-watt solar powered fan Model NSP20WW provides exhaust ventilation for attics up to 1,500 square feet. The CFM of the fan is up to 1050 with direct sunlight to the solar panel.
...Mixing 2 or more DIFFERENT types of exhaust vents on the same roof above a common attic is not recommended (ridge vents, gable louvers, wind turbines, power fans and roof louvers) because it
...Air Vent does not manufacture products for use on flat roofs. All of our products require a minimum 3/12 roof pitch. There are specific products available for flat roofs typically available
...Disconnect the solar panel wiring, loosen the three motor bracket screws, and remove the six dome arm screws from the roof side to get access to the fan blade. Remove the fan blade from the motor
...With combination thermostat/humidistat controls, power attic ventilators monitor heat and humidity levels in summer through winter for year-round attic protection from the damaging effects of
...The key to solving ice dams is to create a cold roof, with the temperature of the inside roof sheathing near that of the outside air temperature. To create such a condition, large volumes of
...Ice dams are barriers to water runoff on the roof. They usually form at the roof edge, just above the gutter, in cold, snowy climates. They form when snow melting on warmer areas of the roof,
...Air Vent's internal weather filter provides a more complete barrier from the elements. Wind-driven rain, snow, dust and insects are trapped by the filter. And because Air Vent ridge vents provide
...With an unbaffled ridge vent, wind and other elements can blow directly in through the ridge vent. Air entering the vent can create pressure in the attic, which prevents air and moisture from
...Air Vent ridge vents feature an advanced designed, external baffle that is one of the keys to the ridge vent's outstanding performance. The baffle deflects wind up and over the vent, creating an
...A balanced system of intake and exhaust airflow through the attic is the best way to create effective, year-round ventilation. Thus, in addition to installing ridge vents, which act as exhaust
...For non-powered attic vents (ridge vents, roof louvers, wind turbines, etc.)
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Building codes give minimum attic ventilation requirements. Most attics require more. In fact,
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