Understanding the Roofing Decision for Your Custom Home
Choosing between metal roofing and shingle roofing affects your home every single day — from what you hear during a thunderstorm to what you pay in energy and insurance costs over the life of the structure. Both options have evolved significantly, and both deliver excellent results on a custom home in the Greenville-Spartanburg area. At Grander Construction, we have installed both extensively and can speak from direct experience about how each performs in our Upstate SC climate.
Standing Seam Metal Roofing: The Long Game
Standing seam metal uses long vertical panels joined by raised seams that interlock and conceal the fasteners. This concealed-fastener design separates standing seam from cheaper exposed-fastener metal panels. The hidden fasteners eliminate the most common failure point — rubber washers around screws that degrade over time and allow leaks.
In our climate, standing seam excels: its smooth surface sheds water and debris efficiently during heavy rainstorms, it is rated for winds up to 140 mph or higher, and the reflective surface of a light-colored metal roof can reduce cooling costs by 10 to 25 percent. With a Class A fire rating, Class 4 impact resistance, and a 50 to 70 year lifespan, metal is a genuinely long-term investment.
The upfront cost is the primary barrier — typically $12 to $18 per square foot installed versus $4 to $7 for architectural shingles. On a 2,500-square-foot roof, that difference can be $15,000 to $25,000. But factor in that metal avoids mid-life replacement, and the 30-year math shifts considerably. Modern standing seam comes in virtually any color through Kynar 500 factory finishes that resist fading for 30-plus years.
Architectural Shingle Roofing: The Proven Standard
Architectural shingles use multiple layers of asphalt-impregnated fiberglass to create a dimensional, textured appearance that mimics wood shakes or slate. Top-tier products from GAF, CertainTeed, and Owens Corning carry wind ratings of 110 to 130 mph. Impact-resistant versions with SBS-modified asphalt achieve Class 4 impact ratings and can qualify for insurance discounts.
Installation cost is where shingles hold their clearest advantage. At $4 to $7 per square foot installed, a complete roof is significantly less expensive than standing seam. Aesthetically, shingles offer a softer, more textured roof plane that suits traditional, Colonial, Craftsman, and transitional styles beautifully.
Key Comparison Points
Noise During Rain and Hail
Yes, rain on a metal roof is audible, but modern construction practices significantly dampen the sound. With a solid plywood deck, synthetic underlayment, and insulation between the metal and living space, rain noise is present but not problematic — many homeowners come to enjoy it. Hail on metal is loud, but the consolation is that while hail is loud on metal, it is damaging on shingles. After a significant hail storm, the metal homeowner endured noise; the shingle homeowner files an insurance claim.
Lifespan and Replacement Cycles
Over a 60-year horizon, a metal roof needs zero replacements. An asphalt shingle roof will need at least one full replacement around year 25 to 30. When you add the cost of two shingle installations plus tear-off and disposal, the total expenditure often approaches the original cost of a metal roof.
Insurance Benefits
Many South Carolina insurance carriers offer premium discounts for metal and impact-resistant roofing — potentially 10 to 28 percent on the wind and hail portion. Over 30 years, these savings can amount to thousands of dollars.
Can You Mix Metal and Shingles?
We do it regularly. A common approach is standing seam on accent roofs — front porches, dormers, bay window pop-outs — with architectural shingles on the main roof field. This delivers visual interest at key focal points while managing overall cost. The key is proper flashing and transition detailing where the two materials meet.
Does a metal roof attract lightning?
No. Metal does not increase the likelihood of a lightning strike. Lightning strikes the highest point in an area regardless of material. If lightning does strike a metal roof, the metal dissipates the charge across a wide area, and because it is non-combustible, there is no fire risk. A metal roof is actually safer in a lightning event.
How does a metal roof perform in extreme heat?
Very well. Reflective metal finishes bounce a significant portion of solar radiation. Studies by Oak Ridge National Laboratory have shown reflective metal roofing can reduce roof surface temperatures by up to 100 degrees Fahrenheit compared to dark asphalt shingles. Even dark-colored metal roofs with infrared-reflective pigments outperform comparable shingles.
What about walking on a metal roof for maintenance?
Standing seam can be walked on — step on the flat area between seams, never on the seams themselves. Soft-soled shoes are essential. Most homeowners find that metal’s low-maintenance nature means they rarely need roof access. Debris slides off more readily, and moss and algae growth is virtually nonexistent on metal.