Installing an attic fan. Fans can cost about $40, and an automatic shutter can be $30. Need to adapt vents to type of roof design, house location and direct sun. 1 sq foot vent area for every 300 sq feet of attic area.
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Adequate roof ventilation reduces cooling bills, extends shingle life, and prevents roof rot and ice dams in winter. Both roof and soffit vents are easy to install in just a few hours. They'll protect your house from expensive future repairs. This article will help you determine if your attic is properly ventilated and show you how to install more vents if you need them.