Attic Venting For 1500 Sq Ft

Building codes vary.

Attic venting for 1500 sq ft.

Calculate or enter the square footage of the attic or area to be vented. For example a 6 by 12 inch soffit vent has 72 square inches which when divided by 144 results in a 0 5 square foot opening. It is designed for attic spaces up to 2200 sq. Based on your 1100 sq.

So in our example we will divide the 1 500 square feet by 300. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. More product. Of vent for every 300 sq.

Of vent space for every 150 sq. The erv5 model power roof mount vent can move air at a rate of up to 1250 cu. This in turn can help save money on your heating and cooling costs. Attic area in square feet.

Ok so now we know the square footage of the attic area to be ventilated. It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. 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.

Ft you divide that by 150 to get 10 sq. The rule of thumb on the amount of vent space needed is approximately 1 sq. It is designed for attic spaces up to 2800 sq. Add an additional 20 cfm x 1 20 if you have a steep roof and 15 cfm x 1 15 for a dark roof.

The erv6 model power roof mount vent can move air at a rate of up to 1500 cu. Now let s figure out how much ventilation space we need. Remember the minimum area requirement when using a continuous system is a ratio of 1 300. Attic vent fans are commonly rated from 800 to 1 600 cfm making one fans suitable for attics of up to around 2 200 square feet.

30 feet x 50 feet 1 500 square feet. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. Attic x 0 7 700 cfm minimum fan rating. Ideally half the vents should be located in the soffit at the bottom of the roof and half in gable or ridge vents near the top.

6 measure the radius of round vents or take half the diameter of the. So if your attic is 1 500 sq. Ventilation area in square feet. Net free area in square inches.