What is the minimum gauge for sheet metal veneer wall ties?

The minimum gauge for sheet metal veneer wall ties is 22 gauge. This standard is established for structural integrity and durability in supporting the veneer and ensuring that it remains securely attached to the backup wall. Using 22 gauge sheet metal for ties provides the necessary strength to tolerate various loads and environmental impacts without bending or breaking.

Higher gauges, such as 18 or 16, are available, but they are not required as the minimum for this purpose. Lower gauges (like 20 gauge) indicate thicker metal, which may offer additional strength, but they are not mandated for compliance with building codes that specify 22 gauge as the acceptable minimum. Building codes emphasize using specific materials and gauges to ensure safety and performance, particularly in exterior applications where factors like wind and moisture may affect the integrity of the wall assembly.