Insulating And Ventilating An Attic

Building codes vary.

Insulating and ventilating an attic.

That means air can t flow from the soffit vents to the roof vents. Most building codes require a ratio of 1 150 ventilation space to attic floor space. Square footage of your attic. The insulation will resist heat transfer into the house.

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. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. Type and material of your insulation. Consider installing continuous ventilation as a part of this project.

Ventilation can be accomplished using various products and techniques. According to home advisor insulating your attic can cost between 1700 to 2100. If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. Ventilating your home prevents moisture odors and indoor air pollutants from building up.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Baffles are available at home centers. The main factors that impact the cost are. Proper insulation and air sealing also keeps attics cold in winter by blocking the entry of heat and moist air from below.

Insulating and air sealing your attic is one of the best things you can do for your home. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. The solution is to add baffles which allow air to flow past the insulation photo 9.