Soffit, Vent & Weep Hole Insect Screen is used for screening attic soffit vents, foundation vents and brick weep holes against insects, rodents and wind-blown embers while keeping ventilation open. IRC R806 ventilation is the reference cited for it on drawings, datasheets and purchase orders.
What IRC R806 ventilation Means for Soffit, Vent & Weep Hole Insect Screen
The dimensions in the table below are supplied to suit IRC R806 ventilation. Where the standard sets requirements for the finished appliance, device or system, compliance testing of that assembly stays with its manufacturer; we supply the metal mesh part to the drawing and can provide material certificates and dimensional reports with the shipment.
Soffit, Vent & Weep Hole Insect Screen Dimensions
| Mesh count | Wire diameter (mm) | Aperture (mm) | Micron rating (u00b5m) | Open area (%) | Material |
|---|---|---|---|---|---|
| 16-Mesh | 0.280 | 1.308 | 1308 | 67.0 | Aluminum |
| 18-Mesh | 0.280 | 1.131 | 1131 | 64.0 | SS304 |
| 1/8 in ember mesh | 0.500 | 3.175 | 3175 | 74.0 | SS304 (WUI ember-resistant) |
Specifying Soffit, Vent & Weep Hole Insect Screen Beyond the Standard
- 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.
When Soffit, Vent & Weep Hole Insect Screen Is Not the Right Choice
Not a rodent barrier for large openings without heavier welded mesh.
