Poor Attic Ventilation Can Ruin Your Insulation, Destroy Your Shingles, And Potentially Raise Your Energy Bills!
Proper attic ventilation systems allow a continual flow of outside air through the attic, protecting the efficiency of the insulation and helping to lower temperatures in the living space.
It consists of a balance between air intake (at your eaves or soffits) and air exhaust (at or near your roof ridge).
The U.S. FHA (Federal Housing Administration) recommends a minimum of at least 1 square foot of attic ventilation (both intake and exhaust) for every 300 square feet of attic space. For example, if your attic is 900 square feet, you need a total of 3 square feet of ventilation.
This amount should be divided equally between intake and exhaust ventilation (i.e., 1 1/2 feet of each) to insure proper air flow through the attic. To calculate the amount of ventilation you need for your home, visit GAF’s Ventilation Calculator .
JenPro Roofing provides professional installation of GAF Cobra® Ridge Vents and Attic Ventilation
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