As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space.
How many o hagin roof vents do i need.
Remove trapped gases proper attic ventilation facilitates the removal of hot trapped gases and fumes a major cause of indoor air pollution allergies and related health problems.
O hagin vents are manufactured and protected under one or more of the following patents other u s.
Based on your 1100 sq.
You ll need the square footage of your attic to calculate the number of roof vents that you should need.
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.
Ventilate your attic space.
Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation for every 300 square feet of attic floor space evenly split between intake and exhaust.
And foreign patents are pending.
Benefits of attic ventilation best vents for compo roofs o hagin vents are manufactured and protected under one or more of the following patents other u s.
877 324 0444 fax.
For example if you have 1200 square feet of attic space you should need at least 4 air vents to ensure proper ventilation.
Thus if your attic is 450 square feet you need roof vents equaling 3 square feet.
Send us your plans.
Most local building codes require compliance with either the 1 150 method or the 1 300 method exception refer to local code.
They should be divided equally between inlet and outlet vents and they can be used in any combination that will work with your roof s design.
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.
Near ridge of the roof.
How many vents will my house need.
Determine the total square footage of the attic floor space to be ventilated.
You must know which code compliance method is required in the project area.
And this guideline you ll need a minimum of.
And foreign patents are pending.
If you want to get an approximation of how many air vents that your roof should have on your own you ll have to do some measuring.
Provide us with your address and we ll figure out the rest.
Conserve energy o hagin attic vents are completely passive reducing energy costs related to heating and cooling.
Profile specific attic vents for tile roof applications free technical support services phone.