Lomanco Roof Vent Calculator

Determine square feet of code required ventilation.
Lomanco roof vent calculator. 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. 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. 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. Use avp s roof vent calculator to determine the number and size of exhaust vents you will need. All lomanco attic ventilation product requirements are based on the minimum standard 1 300 rule as set forth by the international building code ibc and the international residential code irc.