Screen Tight's heavy-duty MeshGuard screening system recently successfully completed the International Code Council Evaluation Service (ICC-ES) review process and earned approval for porch and deck guardrail infill applications. When properly installed, the system is engineered to stand up to 50 pounds per square foot of pressure (or actual test loads of 125 pounds per square foot after applying the required 2.5 safety factor). The comprehensive evaluation report, ESR-3938, outlines the test results and provides vital information for building code officials and industry professionals. The system can be used with openings as large as 3-ft. x 6-ft.

The vinyl extrusions used with the company's MeshGuard polyester screening are reinforced with steel strips that act as elongated washers, which prevent the extrusions from pulling away from the framing under load. The galvanized steel strips are pre-punched, and come in 8-foot lengths.

Flat (vs. round) screen splines are used with the extrusions to hold the screening in place, though standard Screen Tight vinyl caps can be used to finish the installation. The system has been independently tested to meet code requirements for railing infill, as long as all three components--extrusions, steel strips, and MeshGuard screening-- have been used, and as long as it has been attached to a horizontal structural railing that is between 36 inches and 42 inches above the floor.