R-panel metal roofing is the most widely used metal roofing system in Texas for commercial, agricultural, and industrial buildings. With its distinctive raised ribs and through-fastened installation, R-panel delivers excellent weather performance at a fraction of standing seam cost.
R-panel costs $5.00-$8.00 per square foot installed — roughly 40-50% less than standing seam. For a 5,000 sq ft commercial building, expect $25,000-$40,000 fully installed.
Panel Width: 36" coverage (most common)
Rib Height: 1.25" major ribs
Gauge: 26 or 24 gauge Galvalume steel
Fasteners: Exposed screws with neoprene washers
Min Pitch: 1/2:12 (nearly flat)
R-panel is ideal for warehouses and distribution centers, agricultural buildings and barns, retail and commercial structures, carports and covered parking, workshops and storage facilities, and budget-conscious residential projects.
The key difference is fastener type. R-panel uses exposed screws that penetrate the panel surface, while standing seam hides all fasteners under interlocking seams. Exposed fasteners eventually need re-sealing (every 10-15 years), making R-panel slightly higher maintenance — but the 40-50% lower upfront cost makes it the smart choice for commercial and agricultural applications.
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