Attic Air Flow

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Attic air flow.

Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. For the same reason insulation shouldn t touch the roof s underside. Soffit vents may leave air trapped at the top of your attic. The solution is to add baffles which allow air to flow past the insulation photo 9.

Proper air circulation through the attic space helps lower cooling bills and prolongs the life of roofing materials. 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. Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Make sure there is air flow from the eaves.

That means air can t flow from the soffit vents to the roof vents. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. 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.

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 is an insulation company that specializes in evaluating your home to ensure that it is properly ventilated and insulated and the evaluation is free. 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. Soffit vents allow outside air to enter the attic while vents along the peak of.

Baffles are available at home centers. Ventilation can be accomplished using various products and techniques. 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. Intake vents located at the lowest part of the roof under.

If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. This is normally the point where air enters your attic. The insulation will resist heat transfer into the house. Most building codes require a ratio of 1 150 ventilation space to attic floor space.