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Detailed Information on Our Attic Ventilation Solutions

We design and install attic ventilation systems that fit the needs of your home. We use a combination of leading edge techniques in order to to give your house the best possible ventilation.

 VentMASTER’s  attic ventilation solutions include:

  • Ridge vents with external baffles
  • Improved soffit vents -we replace
    solid vinyl soffits with efficient, perforated vinyl soffits
  • Insulation:
    • Blown-in insulation
    • Insulated covers for pull down
      attic stairways
  • Bathroom ventilation:
    • Properly vented fans!
    • Fan timers and improved air-flow techniques
  • Dryer duct work done right
  • Roofing/flashing that fix ice dams-permanently!

Ridge Vents

 

Ridge vents are a type of fixed exhaust venting. Compared to other types of fixed venting, ridge vents offer several advantages and maximum efficiency. The best ridge vents for successful attic ventilation contain an external baffle designed that draws out hot attic air and moisture regardless of wind direction or force (see below).
baffled ridge vent
A baffled ridge vent creates an area of low pressure on both sides of the ridge vent. It literally pulls air out of the attic!
When the wind direction is perpendicular to the ridge, it strikes the external baffle and jumps over the ridge. That movement creates a Bernoulli Effect, causing low pressure to develop on both sides of the vent. When that happens, air from the attic is “lifted” out, in much the same way low pressure created above an airplane wing gives “lift” to the plane.

The same thing happens when the wind direction is parallel to the ridge. It moves across the louvers, creating low pressure areas on the louvers on both sides of the ridge vent. In addition, when there is little wind force, ridge vents take full advantage of the thermal effect to maintain air circulation across the underside of the roof sheathing. Warm air rises and exhausts through the vent which allows a continuous flow of cooler air to enter through the intake vents. Only ridge vents use this thermal effect efficiently and effectively because only ridge vents provide continuous and uniform air movements along the length of a roof.

Ridge Vent Attic VentilationRoof Louvre 2
 It takes fifteen roof louvers to equal the exhaust venting of 42 linear feet of ridge vent. This clearly demonstrates the performance and aesthetic advantages of ridge vents.

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Maximum air movement
Externally baffled ridge vents work better because they take advantage of two natural forces: the fact that warm air rises, and the low air pressure created at the vent openings when the baffle deflects the wind.

Uniform Air Movement

Ridge vents run the entire length of the roof and thus they provide a uniform flow of air along the underside of the roof sheathing. That air movement helps eliminate “hot spots” that develop with other types of exhaust vents – even powered vents. No other exhaust vent provides this type of airflow.Maximum Visual Appeal
Ridge vents offer a low-profile design that minimizes their appearance on a roof. Shingle-over designs allow optimum blending with other roof materials (see above).
It’s important to emphasize that these advantages apply only to ridge vents that use an external baffle design. A series of independent tests concluded that only an external baffle directs the wind up and over the vent. This is important because that controls the flow of air which in turn creates the area of low pressure.  This causes the air to be pulled from the attic (see below).
Ridge Vent-Roll Style - part of our ventilation solutions.roll style ridge vent 2
A roll vent with an internal baffle, or without any baffle at all, does not “pull” air from the attic.An externally baffled vent “pulls” air from the attic from both sides of the ridge vent.

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Soffit Vents (Intake Vents)

Intake vents are available in many designs. In order to choose the right type for a job, you have to consider the structure of the home, the area where the vents are located, and the net free area provided by each unit. The most common types of soffit (intake) vents are:
 

Undereave Vents are mounted under the soffit, on the underside of the house’s eave.  They allow needed air to enter the attic. The units vary in size and the net free area varies accordingly.

 

undereave soffit vent
Continuous soffit vents take in outside air and are also mounted in the soffit, on the underside of the eave. These vents vary in length, with the typical length being 96”.continuous soffit vents
Vented drip edge is used on homes without soffits, eave areas, or gutters. Vented drip edge combines a drip edge with intake louvers. This vent should only be used if there are no gutters. Drip Edge Vents

The Edge™ Vent shingle-over intake is a roof-top installed vent that works well when there are no soffits or gutters.

Conventional intake vents require installation in the soffit for maximum weather protection.  The shingle-over intake vents, The Edge Vent, is different. It has been designed for roof-top installation and maximum weather protection. This vents works well when there are no soffits or gutters.

Watch a short video to see how the Edge Vent works.

edgevent

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Bathroom Ventilation

 

One of the most important items in a bathroom is a properly installed fan. It is necessary to all successful ventilation solutions. It is also one of the most affordable and least noticeable items. Underestimating the amount of damage simple water vapor does is a major mistake for any homeowner.

Without proper ventilation, excess bathroom moisture affects the indoor air quality and jeopardizes the structure of your house.

Adequate bathroom ventilation, properly installed, is the best way to eliminate steam and bathroom odors. Mounted in the ceiling or in the wall, ventilation fans help rid the bathroom of odors and, most importantly, of potentially damaging moisture.

Why a VentMASTER installed bathroom ventilation solution?

  • The correct amount of ventilation –  Your VentMASTER solution is designed to move the right volume of air to ventilate your bathroom successfully.
  • Quiet fans – In order to be effective, a bathroom fan needs to be used and that usually does not happen if it’s too noisy.
  • Fans vented properly! – An improperly vented fan is disastrous. It leads to moisture damage and serious mold issues.
  • Fan timers – A fan timer makes sure your system runs for the proper amount of time needed to clear the air of moisture while you go on your way!
  • Improved air-flow techniques – Proper airflow is required to ensure your bathroom ventilation removes the maximum moisture.
Bad Ventilation Installation
bad bathroom ventilation creates attic moisture
Proper Ventilation Installation
good bathroom ventilation prevents wet attics

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What If I Have no Soffits?
If your house does not have soffits or gutters, we install ventilated drip edge for your soffit vent.
Drip Edge VentsFor applications without soffits, vented drip edge combines a drip edge with intake louvers. This vent should only be used if there are no gutters.
Also, if your house does not have soffits but there are gutters present, we never install ventilated drip edge.  When the gutter fills with snow in the winter, it  blocks the drip edge making the vent useless. In these situations we recommend the installation of “Smart Vent” (see below).
edgeventWhile conventional intake vents require installation in the soffit for maximum weather protection, the shingle-over intake vents, The Edge Vent, has been designed for roof-top installation and maximum weather protection

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Hip Rooves

 

An Attic Ventilation Challenge
Hip roofs are challenging for attic ventilation for two reasons. First, hip roofs often create a large volume of space in the attic that needs to be ventilated. Second, while ridge vents are the preferred method to ventilate an attic, the length of the ridge on many hip roofs isn’t long enough for a ridge vent to effectively ventilate the attic. If you need to ventilate a hip roof, we have  several solutions: Ridge Vents– If the hip roof design is long enough to satisfy ventilation requirements, a ridge vent – installed across a ridge – may be a solution for ventilating. Power Attic Ventilators: a roof-mounted power attic ventilator may be the best option to ventilate a hip roof. A power attic ventilator, especially a model with a combination thermostat/humidistat, can quickly and efficiently ventilate the area when needed.

 

Please note that we will be happy
to contact you Monday through
Friday from 9:00 AM – 5:00 PM.