Ohagin Roof Vents Calculator

Ventilation protects attic insulation and rafter cavities from moisture thereby reducing the risk of mold and dry rot.

Ohagin roof vents calculator. Calculate or enter the square footage of the attic or area to be vented. Additionally placement of o hagin vents both high and low should provide an equal balanced rate of ventilation performance in each area. This strategic high and low placement of o hagin vents allows the balanced system to fully optimize both wind and thermal effects to provide superior passive ventilation throughout the attic. 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.

Profile specific attic vents for tile roofing applications. 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. O hagin vents are completely passive reducing energy costs related to heating and cooling. Is recognized for its industry leading efforts in research development and testing.

For balanced ventilation an equal amount of intake vent area net free area should also be installed. For the complete pdf version of the installation instructions in english and in spanish please follow one of the links below. 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. Extending the roof s life.

Quick vent calculation guide for o hagin s standard weathermaster and fire ice attic vents there are two important pieces of information required in order to calculate the adequate number of vents required for your project. The patented o hagin balanced ventilation system utilizes o hagin vents placed strategically with in the field of roofing material both high near the ridge for exhaust and low near the eave for in take this strategic high and low placement of o hagin vents allows the balanced system to fully optimize both wind and thermal effects to provide superior. Proper attic ventilation facilitates the removal of hot. Removal of trapped gases.