Attic Venting For 1500 Sq Ft

Ventilation area in square feet.

Attic venting for 1500 sq ft.

1 500 square feet. Divided by 150 sq ft. Of vent for every 300 sq. And this guideline.

Of ventilation area per 150 sq ft. 6 measure the radius of round vents or take half the diameter of the. Ft you divide that by 150 to get 10 sq. It is designed for attic spaces up to 2800 sq.

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. Calculate or enter the square footage of the attic or area to be vented. Based on your 1100 sq. See typical tasks and time to insulate an attic along with per unit costs and material requirements.

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. 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. Ok so now we know the square footage of the attic area to be ventilated. I m in california so the code equires 1 sq ft.

Now let s figure out how much ventilation space we need. Take the 13 sq ft and divide by 2 which gives you 6 5 sq ft. 30 feet x 50 feet 1 500 square feet. Remember the minimum area requirement when using a continuous system is a ratio of 1 300.

In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. Of soffit vent area. I took the 1921 sq ft. So if your attic is 1 500 sq.

Of vent space for every 150 sq. Of area which gave me 12 8 or 13 sq ft. 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. The rule of thumb on the amount of vent space needed is approximately 1 sq.

The cost to insulate an attic starts at 1 68 3 25 per square foot but can vary significantly with site conditions and options. Get fair costs for your specific project requirements. This in turn can help save money on your heating and cooling costs. Attic area in square feet.

So in our example we will divide the 1 500 square feet by 300. 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. See professionally prepared estimates for attic insulation work. Building codes vary.