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 roof vents.
Duct tape was used here.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
Identify vents in your home that have an exterior entrance.
Make sure vent cover fits.
How to screen vents step 1.
Climb the ladder and remove the screws holding the vent in place.
Most vents incorporate a screen at the inlet.
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.
Turn up the feet of the ladder so the ladder s spurs can hold the ladder firmly on.
Cut screening material to fit.
Remove the other vents from the.
Secure screen material on the interior of vent cover.
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.
Remove vent covers step 3.
Roof vent cover from start to finish.
How to replace the box vent on your roof.