Common 1 4 screens are ineffective and should be replaced or retrofitted.
O hagan attic vent.
Today o hagin has local and national testing approvals.
4 inch subflashing with diverter cap sheet pickle n paint technique video.
Proper attic ventilation facilitates the removal of hot trapped gases and fumes a major cause of indoor air pollution allergies and related health problems.
Here a video on how i install a o hagin vent on a shingle roof.
For the complete pdf version of the installation instructions in english and in spanish please follow one of the links below.
And holds multiple domestic and international patents with many more pending.
Attic vent for 2 piece clay tile roofing.
Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh.
Attic vent for clay flat tile roofing.
O hagin patented attic vents for tile roof applications are manufactured as a two piece system consisting of a primary vent sub flashing and a profile specific secondary vent cover.
Use manufacured and ca approved vents see below to retrofit existing attic soffit basement foundation and gable vents where possible.
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.
Is recognized for its industry leading efforts in research development and testing.
Removal of trapped gases.