Calculating Attic Ventalation

Calculating ventilation area ok to determine how much ventilation area you need for your house all you need to know is the square foot area of the attic to be ventilated.

Calculating attic ventalation.

According to their requirements you should have 1 square foot of attic ventilation per 300 sq ft of attic floor space. Select ventilation product flex roll ridge vent multi roll multi purpose vent rigid roll ridge. Hit the calculate button for the recommended amount of exhaust and intake ventilation. There should also be a 50 50 balance of attic venting and roof venting.

Roof ventilation calculator enter your attic area or length and width to determine your ventilation needs. 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. Our passive roof vents are ul certified and rated to withstand wind pressure in excess of 200 mph. If your roof is 1200 sq ft soffit floor space you will need 4 sq feet of roof ventilation.

Calculate or enter the square footage of the attic or area to be vented. Let s use the following simple ranch house for an example. According to the fha federal housing administration us for every 300 square feet of attic floor area you should have at minimum one square foot ventilation. Calculate the soffit vent area needed divide the total vent area by two to determine the soffit vent area.

Home attic vent calculator for years we have been working with architects and specifiers to ensure affordable roof ventilation that upholds building code standards. See quantities below for each gaf ventilation product typically rounded up. Enter the length and width of the attic floor or the total square footage of the attic floor. To find out how many soffit vents you need to install.

Hence you would need two square feet 600 300 of attic ventilation. This yields a total area of 1 104 square feet. Jones takes this measurement and divides it by 150 for a total of 7 36 square feet of ventilation space that is needed. Jones has an attic space that measures 23 feet by 48 feet.

The house measures 30 feet by 50 feet.