Lomanco Roof Vent Calculator

Enter square footage calculate or enter the square footage of the attic or area to be vented. Use avp s roof vent calculator to determine the number and size of exhaust vents you will need. Determine square feet of code required ventilation.

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Vent Calculator

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Vent Selector By Lomanco Vents

Lomanco Vents Instructions

Use the calculator below to find out how many exhaust and intake vents you will need on your house.

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. Vent calculator design your balanced ventilation system. 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. 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.

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. 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. For balanced ventilation an equal amount of intake vent area net free area should also be installed.