Roof Ventilation and Why It’s Important for a Home

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Allowing cold, dry air in and letting warm air escape is important for keeping roofs in good shape. Even though most homes are vented, homeowners are often unaware of the importance of ventilation. Roofs need to “breathe” to stay healthy, which makes ventilation beneficial for multiple reasons.

Proper roof ventilation allows air to flow through the attic year-round. Moreover, ventilation reduces the risk of condensation and mold build-up, preventing damage and prolonging the roof’s life. Numerous ventilation systems are available, and the correct choice depends on the climate and the design of the roof. 

This article covers some of the benefits of having proper roof ventilation:

Extends the roof’s life

Roof ventilation is needed during both winter and summer. In both seasons, ventilation prevents a build-up of heat under the roof.

During winter, proper roof ventilation prevents the snow from melting and building up at the roof’s edges in the form of icicles. The snow and ice build-up can cause severe damage to the roof, resulting in expensive repairs. Proper roof ventilation doesn’t allow the warm air to remain inside and prevents snow from melting. If the roof is well-ventilated, it will be covered in snow, with no icicles around the edges.

During summer, if there’s no roof ventilation, the heat can build up, resulting in extremely high temperatures that can damage the shingles and the entire roof structure. A well-vented roof prevents the heat from remaining in the attic.

Reduces costs

Well-vented roofs let the warm air out, thus lowering the temperature inside. This is essential for those who live in hot, humid areas and use air-conditioning. With proper roof ventilation, you’ll put less strain on the air conditioner and reduce cooling bills. 

Regulates temperature

If the upstairs is hotter than the downstairs, it’s most likely due to the poorly vented roof. This is especially noticeable during hot weather. A well-vented roof lets the cool air in, regulating the temperature and preventing the attic and top floor from overheating. Plus, it prevents condensation and hot air from remaining in the attic, which can cause mold, leaks, and other problems.

Keep the roof healthy

Whether you’re researching roof ventilation systems for a new house or thinking about upgrading the current system, it’s essential to understand its importance. Proper ventilation prolongs the roof’s life, prevents damage, reduces bills, and regulates temperature. Contact a professional to discuss the best ventilation type for your roof.


Patterson Construction Company installs and repairs residential roofs of all kinds, skylights, roof ventilation, fascia and underlayment on Phoenix-area homes. Call 602-825-3638 for a free quote today!

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