What types of metal roofs are used on homes?
Standing seam
Vertical panels joined by raised seams, with clips or a nailing flange hidden under the seam. Snap-lock seams click together, while mechanical-lock seams are crimped with a seaming tool and suit lower slopes. Clean modern lines, few exposed fasteners, long life, and the highest cost.
Exposed-fastener panels
Rib panels such as R-panel and PBR, 5V crimp, and corrugated. Screwed through the face with rubber-washer screws. Lower cost and fast to install, but fasteners need periodic checking and the look is more rural. Common on porches, barns and mountain homes.
Metal shingles
Interlocking pieces stamped to resemble shakes, slate or tile, often with hidden fasteners. A traditional look with metal's durability, though the small pieces make installation more labor-intensive.
Stone-coated steel
Steel panels coated with stone granules and shaped like shakes, tile or shingles. A quieter look that hides dents better, and some products are impact rated.
Materials and finishes
Most are painted Galvalume steel; aluminum, copper and zinc are less common. Paint systems range from SMP to PVDF, and PVDF holds color better.
Georgia considerations
- Hail: smooth panels show dents, and many policies exclude cosmetic metal damage.
- HOAs: some allow standing seam but not exposed fasteners.
- Heat: reflective finishes can lower attic temperatures.
- Slope: minimums vary by type, down to 1/4 in 12 for standing seam under the code.
See metal roofing in Georgia and roof replacement cost in Georgia.