Vents For Attic Sizes

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.

Vents for attic sizes.

Example 20 wide by 50 long attic. The purpose of attic ventilation is obvious in the summer when hot air collects in the attic and makes the entire house uncomfortable. For a single story house this is usually the same as the square footage of the house itself plus any attached garage area. 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.

While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all. If there are more than one they are centered between the rafters and installed at regular intervals in a horizontal line along the roof. 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.

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

I have roof vents so i have roof ventilation. See the benefits of attic ventilation a new roof is more than just shingles. 20 x 50 1 000 sq. Power gable vent shutter is designed to be used with master flow egv pg series electric gable fans.

Vent size for an attic. Once a contractor knows the attic square footage the amount of necessary attic ventilation. How much ventilation does an attic need. 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.

Builders edge 22 in x 22 in bright white round vinyl gable vent. Take for example ridge vents. But venting has an equally important.