How To Ventilate An Attic

You re probably familiar with the round ones that spin.

How to ventilate an attic.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. A hot ceiling tells you that the attic is acting like a solar oven. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. To properly ventilate an attic two types of vents are needed.

Touch your ceiling on a warm sunny day. The best form of attic ventilation for your home is a balanced system where the intake vents are separate from the exhaust vents. Ventilation can be accomplished using various products and techniques. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed.

Hot air exhaust vents located at the peak of the roof allow hot air to escape. If you don t see any attic vents on the roof or in the eaves you need to add some. Most building codes require a ratio of 1 150 ventilation space to attic floor space. For this kind of system you need soffit vents and ridge vents.

Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Intake vents which are located at the down slope edge of the roof aka eave s and allow fresh air into the attic. We call those whirlybirds or turbine ventilators. Look at your eaves and roof.

These rely on the wind to keep it moving. Here are four signs of an unventilated or under ventilated attic.