Soffit, Vent & Weep Hole Insect Screen (ICC-ES / IRC R806 ventilation) is specified where the duty calls for screening attic soffit vents, foundation vents and brick weep holes against insects, rodents and wind-blown embers while keeping ventilation open. The sections below cover the typical end-uses by industry, the mesh, micron and material decisions for each, installation practice, and the applications this product type is not suited to.
Typical Applications for Soffit, Vent & Weep Hole Insect Screen
Where Soffit, Vent & Weep Hole Insect Screen is specified and bought:
- Home builders & roofers: insect screening behind soffit and ridge vents.
- Wildfire-zone construction: 1/8 in noncombustible ember mesh on attic vents.
- Masonry contractors: weep-hole screens that stop insects nesting in cavity walls.
- Pest control: exclusion work on crawlspace and gable vents.
How to Specify Soffit, Vent & Weep Hole Insect Screen for Your Application
- Opening: 16–18 mesh for insects; 1/8 in (3.2 mm) for ember resistance per local code.
- Free area: Increase the vent size to compensate for the screen's reduced open area.
- Material: SS304 in coastal or ember zones; aluminum indoors.
- Standard: Quote ICC-ES / IRC R806 ventilation and the size designation from the table on the product page, plus any value you changed in the technical drawing.
Handling & Installation Practice
- Staple or fasten every 100 mm so edges cannot lift.
- Inspect after storms for tears.
Common Selection Mistakes with Soffit, Vent & Weep Hole Insect Screen
- Using fine insect mesh where ember mesh is required.
- Ignoring the airflow loss from the screen.
Where Soffit, Vent & Weep Hole Insect Screen Is Not the Right Choice
Not a rodent barrier for large openings without heavier welded mesh.
