The answer is to cover the holes with a type of metal mesh called hardware cloth.
Attic vent mesh.
Alternatively cover all existing vent openings with 1 8 inch or 1 16 inch wire mesh.
Common 1 4 screens are ineffective and should be replaced or retrofitted.
The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture.
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The vent mesh features a protective finish that prevents corrosion and strengthens the weave.
This will keep out pests without restricting airflow through the vent holes.
Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals.
Buy hardware cloth with 1 8 inch or 1 4 inch openings.
The mesh is fine enough to keep out larger insects but strong enough to withstand damage from birds and squirrels.
Fiberglass vent mesh is designed to prevent insects from entering the vents in your garage or attic.
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.
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The building codes and building science for.
It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters.
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.
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Before you begin the project determine if you can fix the screen by removing the vent from the outside or if you must.
Mesh for attic vents is available at home improvement and hardware stores.
Hardware cloth is fairly rigid mesh with heavy gauge wire that is not easily damaged by animals.
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