How To Ventilate An Attic

Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed.

How to ventilate an attic.

When it moves it causes a draw in the attic space to help remove heat. A hot ceiling tells you that the attic is acting like a solar oven. For this kind of system you need soffit vents and ridge vents. To properly ventilate an attic two types of vents are needed.

Look at your eaves and roof. Here are four signs of an unventilated or under ventilated attic. Soffit vents are intake vents located under the outside eaves of your home. Hot air exhaust vents located at the peak of the roof allow hot air to escape.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Ventilation can be accomplished using various products and techniques. Most building codes require a ratio of 1 150 ventilation space to attic floor space. The best form of attic ventilation for your home is a balanced system where the intake vents are separate from the exhaust vents.

These are not bad for ventilation. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. We call those whirlybirds or turbine ventilators. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.

If you don t see any attic vents on the roof or in the eaves you need to add some. You re probably familiar with the round ones that spin.