Attic Ventilation

Written by Courtney Salinas
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Ventilating an attic is an important part of maintaining your home so that you may enjoy it for a long time. Attics are susceptible to heat and cold. Without proper ventilation, it can cause a whole host of problems in your attic.

Ventilation helps keep an attic cool in the summer and helps to control humidity. Without ventilation, humidity can warp wood and ruin insulation. Heat can shorten the life of your roofing materials.

Be careful when installing ventilation systems, though. An overly ventilated attic can be as much trouble as an under ventilated attic. Too much ventilation can draw out your air conditioning in the summer and your heat in the winter while it is drawing out all the heat and humidity in the attic. Over ventilation will cost you money as you use precious energy to cool and heat the outside.

Types of Ventilation

Ridge vents lie along the ridge of the roof, slightly raised from the roof to let air out and keep rain out. Ridge vents are used on the principle that hot air rises and cold air sinks, creating a constant cycle of air moving through the attic, letting humidity and heat out and letting cooler, dryer air in. A wind turbine is the most effective of the types of attic ventilation. It is positioned near the peak of the roof and is operated by passing gusts of wind, which move the turbine's blades and sucks moisture and heat out of the attic.

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