After a Disaster Roof Repairs 6: Ventilation

Publication Number 490-327, August 1996

General

Just as we must breathe to live, a house also must breathe. This means the roof must be ventilated well and correctly. Basically what is required is a continuous flow of air through the attic or roof system at all times. That flow enters at the eaves through the soffit vents and rises as air warms during the day and passes out of high ridge area vents. The air collects moisture vapor and built-up gases and expels them from your house, maintaining a healthful environment for both you and the structure of the house. Moisture and health problems are possible when adequate ventilation is not provided.

Again, there are many types of soffit, ridge area, and gable vents. The most effective system, which uniformly ventilates the entire roof as needed, is the system of continuous soffit vents coupled with a continuous ridge vent.

A good ventilating system for your new roof will help your continued health, prolong the life of the roof by continuously cooling it, cut your cooling bills by venting out hot air, and remove moisture from the attic and home to prevent moisture problems.

Based on information developed by Clemson Cooperative Extension following Hurricane Hugo. Revised for Virginia audiences by Virginia Cooperative Extension.

For more information, contact your local office of Virginia Cooperative Extension.

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