Attic Air Flow

For the same reason insulation shouldn t touch the roof s underside.

Attic air flow. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. In the summer natural air flow in a well vented attic moves super heated air out of the attic protecting roof shingles and removing moisture. Proper air circulation through the attic space helps lower cooling bills and prolongs the life of roofing materials. Ventilation can be accomplished using various products and techniques.

Since 1996 attic air has earned a reputation for providing effective solutions for your insulation and ventilation needs. Intake vents located at the lowest part of the roof under. Soffit vents allow outside air to enter the attic while vents along the peak of. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

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. Most building codes require a ratio of 1 150 ventilation space to attic floor space. If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. 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.

That means air can t flow from the soffit vents to the roof vents. Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. 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.

This is normally the point where air enters your attic. The most common mistake homeowners make when installing insulation is to block the flow of air at the eaves. The insulation will resist heat transfer into the house. Baffles are available at home centers.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.