Use the calculator below to find out how many exhaust and intake vents you will need on your house.
Lomanco roof vent calculator.
The patented o hagin balanced ventilation system utilizes o hagin vents placed strategically within the field of roofing material both high near the ridge for exhaust and low near the eave for intake.
Vent calculator design your balanced ventilation system.
Determine square feet of code required ventilation.
Enter square footage calculate or enter the square footage of the attic or area to be vented.
The best return on investment for protecting the longevity of your home is the proper installation of a balanced ventilation system with the proven performance and quality of lomanco vents.
For balanced ventilation an equal amount of intake vent area net free area should also be installed.
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.