Attic Air Circulation

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca.

Attic air circulation.

If the soffit of your home isn t perforated to allow air movement either replace it with perforated soffit or install round air vents under the eaves to allow air flow. Make sure there is air flow from the eaves. Since 1996 attic air has earned a reputation for providing effective solutions for your insulation and ventilation needs. For instance attic ventilation is used widely in cold climates to evacuate the warm moist air that escapes from the living space below.

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. Most building codes require a ratio of 1 150 ventilation space to attic floor space. Air flows in through the soffit vents and out through the roof vents. If you see dampness or frost you need better roof ventilation and some attic vents.

Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. Rarely will you find a building practice that works everywhere. Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents.

Some regions don t require a vapor barrier. Vents come in various styles. Grab a flashlight and inspect your attic during the winter. Attic ventilation is a year round strategy to help fight heat buildup in the warmer months and moisture buildup in the colder months.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. For the best results place roof ventilation near the roof s peak and soffit vents in the eaves. Additionally attic ventilation is a key ingredient in the defense against ice dams in snow and ice climates. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. About attic ventilation natural attic ventilation. Gable vents may circulate air through only a small percentage of your attic. Soffit vents may leave air trapped at the top of your attic.

One reason for the lack of agreement over attic ventilation is the tremendous variation in climate across north america. Ventilation can be accomplished using various products and techniques.