Attic Air Flow

The solution is to add baffles which allow air to flow past the insulation photo 9.

Attic air flow.

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. The most common mistake homeowners make when installing insulation is to block the flow of air at the eaves. Soffit vents may leave air trapped at the top of your attic.

Soffit vents allow outside air to enter the attic while vents along the peak of. Intake vents located at the lowest part of the roof under. The insulation will resist heat transfer into the house. Proper air circulation through the attic space helps lower cooling bills and prolongs the life of roofing materials.

Most building codes require a ratio of 1 150 ventilation space to attic floor space. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. 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. Ventilation can be accomplished using various products and techniques.

This is normally the point where air enters your attic. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. 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. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away.

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 your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. Baffles are available at home centers. Since 1996 attic air has earned a reputation for providing effective solutions for your insulation and ventilation needs.

That means air can t flow from the soffit vents to 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. Gable vents may circulate air through only a small percentage of your attic. Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks.