Why Does Attic Need Ventilation

This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.

Why does attic need ventilation.

That said air resistance and interference such as vent grates reduces the area of true ventilation. A balanced attic ventilation system that consists of intake at the eaves soffits or fascias of the roof and exhaust at or near your roof ridge serves two important functions. Proper ventilation in your attic helps address excess heat and moisture that can otherwise wreak havoc on your home. Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation.

In other words the entire vent opening doesn t count as vented space. Roof ventilation works by allowing air to flow through the attic which prevents it from becoming overheated and causing moisture. Why adequate roof ventilation is important. For similar reasons your attic needs to breathe also.

There are two primary methods to create air flow within an attic. Second it allows hot moist air to escape. Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside. In the winter allowing a natural flow of outdoor air to ventilate the attic helps keep it cold which reduces the potential for ice damming snow that melts off a roof from an attic that is too warm and then re freezes at the gutters causing an ice dam that can damage the roof.

We need to breathe to get fresh air in and out of our bodies. Whenever possible natural roof ventilation is used. First it allows cool fresh air to enter into the attic. How does venting work to let your attic breathe.

Effective ventilation provides year round benefits creating a cooler attic in the summer and a drier attic in the winter. Attic ventilation is an intake and exhaust system that creates airflow designed to decrease the difference in temperature between the outdoor air and the air inside the attic. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Intake vents located at the lowest part of the roof under the eaves allow cool.

Ventilation only works when air flows. Requires a power source. While we have an active process most homes have a passive venting system which requires a balance between the intakes and outlets.