How To Ventilate An Attic

You re probably familiar with the round ones that spin.

How to ventilate an attic.

If you don t see any attic vents on the roof or in the eaves you need to add some. Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca. Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed. Here are four signs of an unventilated or under ventilated attic.

The best form of attic ventilation for your home is a balanced system where the intake vents are separate from the exhaust vents. To properly ventilate an attic two types of vents are needed. We call those whirlybirds or turbine ventilators. Intake vents which are located at the down slope edge of the roof aka eave s and allow fresh air into the attic.

Ventilation can be accomplished using various products and techniques. Soffit vents are intake vents located under the outside eaves of your home. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Touch your ceiling on a warm sunny day.

A hot ceiling tells you that the attic is acting like a solar oven. Most building codes require a ratio of 1 150 ventilation space to attic floor space. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. These rely on the wind to keep it moving.

These are not bad for ventilation. Hot air exhaust vents located at the peak of the roof allow hot air to escape.