Metal roof panels are roll-formed sections of metal designed to interlock or overlap to create a continuous, weather-tight roof covering. They generally fall into two categories: Standing Seam (concealed fastener, higher durability) and Exposed Fastener (screws visible on top, more affordable).
Various types of metal can be used:
- Galvalume Steel: The most common substrate, consisting of steel coated with an aluminum-zinc alloy for superior corrosion resistance compared to standard galvanized steel.
- Aluminum: Naturally rust-resistant and lightweight; more often seen on coastal applications.
- Gauge (Thickness): Panels are measured by gauge—the lower the number, the thicker the metal. 24-gauge is the standard for high-quality residential standing seam, while the thinner 26 or 29-gauge is common for agricultural or budget-friendly exposed fastener systems.
Central Texas homes benefit in several ways from metal roof panels:
- Hail Resistance: In our “Hail Alley”, insurance companies frequently prefer Class 4 Impact Resistant steel panels (minimum 26-gauge, ideally 24-gauge) as they resist denting better than asphalt.
- Heat Reflectivity: “Cool Roof” finishes (Kynar 500/Hylar 5000 paints) are standard in Texas. These highly reflective pigments re-radiate solar heat, potentially lowering attic temperatures by 20–40°F compared to dark asphalt architectural or three-tab shingles.
- Aesthetics: Popular Central Texas architecture like Hill Country Modern and contemporary farmhouses often include metal roof panels in their design. The contrast of long metal panels blends well with board and batten siding, stone, stucco, and most other exterior materials.