How a Roofing Ventilation System Works

Amazing! How a Roofing Ventilation System Works

Information about How a Roofing Ventilation System Works

Phil Puccio

Roof ventilation system

Every time you inhale, inhale and exhale. Your home may not have lungs, but it also needs to breathe through an inlet and an outlet. The inlet and outlet are the most important components of a roof ventilation system. They work together to circulate fresh air in the attic of your home and hot air out of it.

Why is a roof ventilation system important?

In many modern houses, insulation, multi-glazed windows and other materials keep harsh weather and extreme temperatures out. This restricts the flow of fresh air and hot air can collect under the roof. Proper roof ventilation prevents hot air from accumulating in the attic, which reduces energy costs associated with cooling. It also prevents premature roof failure from heat damage to the shingles and underlay. Without a proper roof ventilation system, evaporated water from activities such as cooking, cleaning, and breathing will build up in your home. This can lead to allergies, mold problems, and damage from condensation. If your home is suffering from excessive moisture, condensation, or mold growth, your home’s ventilation system may need to be checked.

Ventilation vs. air leakage

The uncontrolled and unintentional escape of air is air leakage. Drafts, rattling windows and suddenly freezing rooms in winter are examples of this. If air is leaking out of your house through the roof, your HVAC can work overtime. When it’s cold, your heating system will work a lot harder to rewarm the house. The loss of cool air and the accumulation of hot air in your attic make it difficult to keep your home comfortable in the summer. Both lead to increased energy costs. Ventilation comes in two forms:

  • Direct ventilation, such as opening a window
  • Indirect ventilation that allows air and moisture to flow while controlling temperature loss or increase.

The greatest form of indirect ventilation should be your roof ventilation.

This is how a roof ventilation system works

A roof ventilation system works with both an inlet and an outlet to keep the attic as cool as possible. There are many different products that can be used to install the best ventilation system for every home. A roof ventilation with air intake upwards through the eaves and a blowout via the ridge ventilator ensures optimal air circulation. On certain types of roofs, such as hip roofs, ridge vents do not provide enough square centimeters of exhaust air. Instead, roof louvers must be used. This is why you need an experienced roofer who will evaluate your roof and recommend the best roof ventilation system for your home.

To optimize roof ventilation, first measure the loft area and calculate the square meters of living space. One of the common rules for installing a ventilation system is 3 x 100. For every 100 square feet of floor space, which would be 10 ′ x 10 feet, you would use 3 square inches of inlet and outlet. Following this rule will ensure that the roof ventilation system has the correct amount of inlet and outlet. Otherwise, airflow may be interrupted and your home will not get enough airflow.

Eaves and reveal openings

The ventilation along the eaves is usually done with diffusion-open ventilation strips below the eaves or with brick fans placed at regular intervals. This allows moisture to pass through. Ideally, soffit ventilation that extends the entire length of the eaves provides the best intake flow. You should install at least one ventilation kit on both sides of the attic. This allows air to enter from one side and exit through the other, taking moisture and other environmental build-up with it. However, if you have an overcrowded or cramped attic, it’s time to add ridge ventilation.

Ridge ventilation

By installing a continuous ventilation strip on the ridge of the roof, hot, humid air can escape through the roof. The ridge is the top joint of the triangle. When the hot air flows out, it sucks in fresh air through the eaves and ensures a continuous flow of air. One of the added benefits of a ridge vent is that it blends in with the roofline.

If you’ve been toying with the idea of ​​buying attic fans in the summer because your attic is BLAZING hot, this podcast has more information on attic / roof ventilation.

If your home shows signs of poor ventilation or if a new apartment needs ventilation, contact All Weather Tite. Our experts will provide you with a free estimate, explain the correct roof ventilation and get to the bottom of current ventilation problems in your house.

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