Smaller mesh screen is easier to plug up whether by air borne debris or as shown in the photograph below being painted over during routine painting.
How to screen roof vents.
Secure screen material on the interior of vent cover.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
Following manufacturer s instructions for securing the vent the roofer will likely spread plastic roof cement on the underside of the vent place it over the hole slip the flange under the top side shingles and lay the flange over the down slope shingles.
You might need to break a caulking.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
Identify vents in your home that have an exterior entrance.
Make sure vent cover fits.
Roof vent cover from start to finish.
Most building codes stipulate a minimum mesh size of 1 8 inch to minimize plugging of vent holes and reduction in air movement.
How to screen vents step 1.
Turn up the feet of the ladder so the ladder s spurs can hold the ladder firmly on.
Most vents incorporate a screen at the inlet.
Cut screening material to fit.
How to replace the box vent on your roof.
Remove vent covers step 3.
Set a ladder near an attic vent.