Looking to install solar panels in the Carolinas? Discover which roofing materials work best with solar installations in our regional climate conditions. Sundance Power Systems explains the pros and cons of asphalt, metal, tile, and more for optimal solar performance.
_______________________________

Best Roof Materials for Solar Panels in the Carolinas

When planning a solar installation in Western North Carolina or Upstate South Carolina, your roof material plays a crucial role in the system’s performance and longevity. The unique climate conditions of the Carolinas—from summer humidity to winter ice storms—demand thoughtful consideration of how roofing materials interact with solar panels. Since 1995, Sundance Power Systems has installed solar on virtually every roof type across the region, giving us unparalleled insight into what works best. This guide will help you understand how different roofing materials perform with solar installations in our Carolina climate, ensuring your renewable energy investment stands the test of time.

Metal Roofing: The Ideal Partner for Solar in the Carolinas

Metal roofing has emerged as the premier choice for solar installations throughout the Carolinas, and for good reason. With our region’s combination of heavy rainfall, occasional snow, and summer heat, metal roofs offer exceptional durability with lifespans of 40-70 years—often outlasting the solar panels themselves (typically 25-30 years).

Standing seam metal roofs are particularly advantageous as they allow for clamp-based mounting systems that don’t require roof penetrations. This significantly reduces the risk of leaks while making installation faster and more cost-effective. The reflective properties of metal roofing also help keep your home cooler during our hot Carolina summers, complementing the energy efficiency goals of going solar.

During our frequent Carolina thunderstorms, metal roofing provides excellent protection, and contrary to common misconceptions, properly installed metal roofs actually reduce lightning strike risks rather than increase them. The smooth surface also prevents debris accumulation that could compromise solar panel performance.

Asphalt Shingle Roofs: The Common Choice

Asphalt shingle roofs are the most prevalent in the Carolinas due to their affordability and familiarity. While not as ideal as metal for solar installation, modern solar mounting techniques have made shingle roofs entirely viable for solar. The main consideration is timing—asphalt shingles typically last 15-25 years in our Carolina climate where summer UV exposure can be intense.

If your asphalt roof is over 10 years old, we often recommend re-roofing before installing solar panels. This prevents the need to remove and reinstall the entire solar array when the roof needs replacement in just a few years. Our experienced design team at Sundance Power evaluates your specific roof condition during the site assessment phase, providing honest recommendations that align with your long-term interests.

When installing on asphalt, we use specialized flashed mounting points with weatherproof sealing to ensure water-tight integrity through the seasonal weather patterns common in the Carolinas, from summer downpours to winter freezes.

Tile and Slate Roofs: Beautiful but Challenging

Clay tile and slate roofs, though less common in the Carolinas, present unique challenges for solar installation. These premium materials offer exceptional longevity (50-100+ years) but require specialized mounting solutions and careful handling to prevent damage.

For tile roofs, we typically use tile replacement mounts that substitute a specialized flashed mounting point for individual tiles. This maintains the roof’s water barrier while providing secure attachment points for the solar array. The added installation complexity increases costs somewhat but preserves the aesthetic and functional benefits of these distinctive roofing materials.

The weight of these roofing materials combined with solar panels requires thorough structural assessment, something our engineering team carefully evaluates during the design process. Many historic homes in Charleston, Asheville, and other Carolina towns feature these materials, and we have experience adapting solar installations to preserve their architectural integrity.

Flat and Low-Slope Roofs: Commercial Considerations

For commercial buildings throughout the Carolinas with flat or low-slope roofs, we typically encounter TPO, EPDM, or built-up roofing systems. These present excellent opportunities for solar, particularly with ballasted mounting systems that don’t require penetrations.

The key consideration for flat roofs in our region is managing water drainage, as the Carolinas receive significant annual rainfall. Our design team carefully plans array placement to work with existing drainage patterns and prevent water pooling that could damage the roof membrane or solar equipment.

An added benefit of flat commercial roofs is the ability to optimize panel angle for maximum energy production, especially important in our region where seasonal sun angles vary significantly between summer and winter.

Roof Orientation and Solar Production in the Carolinas

Beyond material considerations, roof orientation plays a crucial role in solar performance across the Carolinas. While southern exposure remains ideal, our experience has shown that east and west-facing roof sections also perform well in our regional climate, often achieving 80-90% of the production of south-facing arrays. This makes solar viable for many homes regardless of orientation.

With net metering available from Duke Energy and other utilities across the Carolinas, properly designed systems can effectively balance production timing with household consumption patterns, sometimes making east-west orientations preferable for certain usage profiles.

Ready to Explore Solar for Your Carolina Home?

Since 1995, Sundance Power Systems has been designing and installing solar systems across Western North Carolina and Upstate South Carolina. Our experienced team can evaluate your specific roof type, condition, and orientation to recommend the optimal solar solution for your home or business.

Contact us today for a free solar consultation, and take the first step toward energy independence with a system designed specifically for your Carolina home. Our heart-centered approach ensures we’ll listen carefully to your needs and develop a customized solution that respects both your property and our shared environment.