Balanced Attic Ventilation

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This method relies on convection which is a mode of heat transfer that is caused by the tendency of warmer air to rise.

Balanced attic ventilation.

That said air resistance and interference such as vent grates reduces the area of true ventilation. Another way to get balanced ventilation is to use the exhaust fans with controls and also install a supply fan. Balance is the key. Calculate or enter the square footage of the attic or area to be vented.

The unbalanced attic consisted of a mix of ridge vents and electric power fans without intake ventilation. The balanced attic consisted of electric power fans repositioned for maximum efficiency and air vent s new edge vent a shingle over intake vent. You can do this with a bath fan installed to blow air into the home or you can use a fan made specially for this task. Intake vents located at the lowest part of the roof under the eaves allow cool.

They have two basic models. Proper attic ventilation can help reduce the load on your air conditioner. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. I m thinking of the qufresh fan made by air king.

Help protect your roof system from premature deterioration by installing a properly balanced attic ventilation system consisting of cobra exhaust vent at the ridge and adequate intake ventilation at or near the soffit areas of your roof. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Figure 1 a balanced system. There are two methods used to ventilate attics.

An under roof cathedral ceiling or attic ventilation system to help the building in any way needs to be properly designed and installed with adequate intake venting at the eaves outlet venting at the ridge and with careful sealing of air leaks from the occupied space into the attic or roof cavity to avoid heat losses or increases in both moisture movement into the roof cavity and increased heating or cooling costs. Figure courtesy of the nrca. The balanced approach helps to optimize air exchange between the attic and the outdoors and allows for effective management of temperature and moisture inside the attic. In other words the entire vent opening doesn t count as vented space.

To calculate the amount of ventilation you need for your home visit gaf s ventilation calculator now.

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