Use avp s roof vent calculator to determine the number and size of exhaust vents you will need.
Ohagin roof vents calculator.
877 324 0444 instructions complete step by step installation instructions are.
Profile specific attic vents for tile roofing applications.
For balanced ventilation an equal amount of intake vent area net free area should also be installed.
Determine the total square footage of the attic floor space to be ventilated.
Ventilation calculator 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 the complete pdf version of the installation instructions in english and in spanish please follow one of the links below.
O hagin vent calculator 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.
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.
Determine the total square footage of the attic floor space to be ventilated.
From its founding roots as a roofing company over 40 years ago o hagin has grown into a nationally recognized designer and producer of top quality state of the art attic ventilation solutions.
O hagin is a recognized leader in attic ventilation testing and design o hagin products hold local and national approvals including.
Today o hagin has local and national testing approvals.
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.
