That said air resistance and interference such as vent grates reduces the area of true ventilation.
Covering attic ventilation holes.
Installation of this type of attic ventilation involves leaving a gap in the sheathing along the ridge and covering it with a perforated vent.
The answer is to cover the holes with a type of metal mesh called hardware cloth.
It easily installs in seconds place it nail it done.
Adding attic vents is a simple matter of cutting holes and installing vents.
Buy hardware cloth with 1 8 inch or 1 4 inch openings.
Photos 1 6 show how it s done.
But before you cut any holes plan the locations of the attic vents.
This will keep out pests without restricting airflow through the vent holes.
When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic.
Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation.
Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them.
Camco standard roof vent cover opens for easy cleaning aerodynamic design easily mounts to rv with included hardware smoke 40453 4 7 out of 5 stars 1 984 31 66 31.
It is an easy plug solution that makes converting from static vents to ridge ventilation products faster and stronger than other methods.
In other words the entire vent opening doesn t count as vented space.
It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters.