Vents For Attic Sizes

Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.

Vents for attic sizes.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. If there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Once a contractor knows the attic square footage the amount of necessary attic ventilation.

The purpose of attic ventilation is obvious in the summer when hot air collects in the attic and makes the entire house uncomfortable. Take for example ridge vents. Example 20 wide by 50 long attic. Builders edge 22 in x 22 in bright white round vinyl gable vent.

The shutter will open when the electric gable vent is operating. See the benefits of attic ventilation a new roof is more than just shingles. While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. But venting has an equally important.

Power gable vent shutter is automatic 20 in. 20 x 50 1 000 sq. To determine the size of your attic multiply the width by the length of the attic floor in feet. Calculate or enter the square footage of the attic or area to be vented.

Vent size for an attic. How much ventilation does an attic need. I have roof vents so i have roof ventilation. The starting point for any attic ventilation project is always what is the size of the attic space to be vented the international residential building code irc defines attic size in terms of its square footage length x width floor of the attic.

Static vents come in a variety of different styles and sizes but are all non motorized vents installed near the roof ridge to allow for unobstructed flow of air from the attic. 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. Power gable vent shutter is designed to be used with master flow egv pg series electric gable fans.