Attic Venting For 1500 Sq Ft

Building codes vary.

Attic venting for 1500 sq ft.

The erv5 model power roof mount vent can move air at a rate of up to 1250 cu. 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. Add an additional 20 cfm x 1 20 if you have a steep roof and 15 cfm x 1 15 for a dark roof. Energy efficient uses up to 15 less electricity than typical competitors vents based on gaf testing at 120 volts helps to reduce energy costs and helps prolong life of the roof and shingles.

Attic area in square feet. 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. Ft you divide that by 150 to get 10 sq. Calculate or enter the square footage of the attic or area to be vented.

Based on your 1100 sq. Remember the minimum area requirement when using a continuous system is a ratio of 1 300. More product. Of vent space for every 150 sq.

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

This in turn can help save money on your heating and cooling costs. 1 500 square feet. It is designed for attic spaces up to 2800 sq. It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation.

So in our example we will divide the 1 500 square feet by 300. Of vent for every 300 sq. 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. 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.

The rule of thumb on the amount of vent space needed is approximately 1 sq. And this guideline. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. 30 feet x 50 feet 1 500 square feet.

The erv6 model power roof mount vent can move air at a rate of up to 1500 cu. Ok so now we know the square footage of the attic area to be ventilated. Net free area in square inches. Now let s figure out how much ventilation space we need.