When counter flashing is installed into a reglet, what is the recommended minimum galvanized steel gauge for fabrication?

When counter flashing is installed into a reglet, what is the recommended minimum galvanized steel gauge for fabrication?

• A. 24 gauge
• B. 26 gauge
• C. 28 gauge
• D. 30 gauge

Answer: (B)

The metal used for counter flashing in a reglet must be thick enough to hold its shape and resist deformation during installation and over time, while still being workable. When installed into a reglet, 26-gauge galvanized steel provides the right balance: it’s rigid enough to maintain the bend and stay in place against weather, yet not so thick that it’s hard to form or install. Thinner gauges (28 or 30) can bend or kink, creating gaps that can leak, while thicker gauges (like 24) add unnecessary weight and cost for most reglet applications. Galvanized steel at this thickness also offers good corrosion resistance essential for exterior roofing.

The metal used for counter flashing in a reglet must be thick enough to hold its shape and resist deformation during installation and over time, while still being workable. When installed into a reglet, 26-gauge galvanized steel provides the right balance: it’s rigid enough to maintain the bend and stay in place against weather, yet not so thick that it’s hard to form or install. Thinner gauges (28 or 30) can bend or kink, creating gaps that can leak, while thicker gauges (like 24) add unnecessary weight and cost for most reglet applications. Galvanized steel at this thickness also offers good corrosion resistance essential for exterior roofing.