Attic Air Circulation

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

Attic air circulation.

Attic ventilation is a year round strategy to help fight heat buildup in the warmer months and moisture buildup in the colder months. Some regions don t require a vapor barrier. Most building codes require a ratio of 1 150 ventilation space to attic floor space. At first it may seem odd to add insulation for warmth and then purposely allow cold air to.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. Since 1996 attic air has earned a reputation for providing effective solutions for your insulation and ventilation needs. Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.

One reason for the lack of agreement over attic ventilation is the tremendous variation in climate across north america. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. Air flows in through the soffit vents and out through the roof vents. Attic air is an insulation company that specializes in evaluating your home to ensure that it is properly ventilated and insulated and the evaluation is free.

Ventilation can be accomplished using various products and techniques. For instance attic ventilation is used widely in cold climates to evacuate the warm moist air that escapes from the living space below. Gable vents may circulate air through only a small percentage of your attic. Additionally attic ventilation is a key ingredient in the defense against ice dams in snow and ice climates.

Rarely will you find a building practice that works everywhere. Make sure there is air flow from the eaves. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. If you see dampness or frost you need better roof ventilation and some attic vents.

Soffit vents may leave air trapped at the top of your attic. Grab a flashlight and inspect your attic during the winter. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Vents come in various styles.

Whether using loose fill or batts put the vapor barrier closest to the warm side of your installation where hot moist air would get in facing the house s interior in cold climates beneath floor insulation and the attic s interior in hot climates on top of floor insulation. This is normally the point where air enters your attic.