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Attic Ventilation & Insulation

Attic insulation is important for helping improve the energy efficiency of a home, but your attic should be more than just insulated. It needs to be properly ventilated to prevent moisture problems in your home. Attic insulation and ventilation should go hand in hand.

The Importance of Proper Attic Ventilation

Proper attic ventilation systems provides a continual flow of outside air through the attic, which helps the insulation do its job better and helps keep the attic cooler so moisture doesn’t build up and cause problems.

Maintaining good airflow and keeping your attic cool can:

  • Prevent moisture problems
  • Keep mold and mildew from developing
  • Prevent wood rot
  • Help improve the overall efficiency of your AC
  • Help prevent ice dams or gutter and roof problems (which can occur in the winter if your attic isn’t cool enough and the ice and snow on the roof melt and then refreeze)

Proper attic ventilation is just as important as proper insulation installation. In fact, if you have insulation installed in an unventilated attic, the space can still be overheated and stuffy (and make the rest of your home uncomfortable too).

Attic Ventilation: How Much & Where to Vent

How much attic ventilation you need will depend on how big your attic is. Generally speaking, one square foot of vent is needed for every 300 square feet of attic space. If there isn’t a vapor barrier in this area, more ventilation can be used. It’s best to use vents in different locations, some up higher on your roof and some lower—this way, air can flow in one and out the other, keeping your attic nice and cool.

Other Information

In many homes, it’s not recommended to cool the attic with the air conditioner. Pulling conditioned air out of the house and up into the attic not only uses more energy and can result in higher utility bills, but it also makes your AC work harder, which can increase the risk of a costly breakdown or replacement later on down the road.

Also, make sure insulation doesn’t cover any soffit vents! Soffit and rafter vents are important in maintaining airflow and facilitating proper attic ventilation.

Although these are good tips to keep in mind when it comes to attic insulation and ventilation, you won’t have to worry about any of this yourself! A professional insulation company will be able to make sure everything is installed correctly and works the way it should.

Attic Insulation Installation in Portland, Oregon

Attic ventilation is just as essential as insulation. Both work together to keep your attic in good condition. If you have any questions about attic ventilation and insulation or you’re ready to install more attic insulation in your Portland, OR area home, contact Installed Building Products Portland today!

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