Best Roof Color for Hot Climate (Energy Savings Guide)

The color of your roof has a direct, measurable impact on your energy bills. In a hot climate like Myrtle Beach, where air conditioning runs 6 to 8 months per year, a dark-colored roof can reach surface temperatures of 150 to 170 degrees Fahrenheit on a summer afternoon. A light-colored roof on the same day might reach 100 to 120 degrees. That 50-degree difference translates directly into how hard your HVAC system works to keep your home comfortable — and how much you pay for it.

Choosing the right roof color for a hot climate can reduce your cooling costs by 7 to 15 percent. For a Myrtle Beach homeowner spending $200 to $400 per month on electricity during the summer, that is real money. But the decision is not as simple as "go white." Modern cool-roof technology allows medium and even darker-toned shingles to achieve impressive energy performance, and curb appeal matters too.

This guide explains exactly how roof color affects energy costs, which colors and products perform best in our climate, and how to balance energy efficiency with the look you want for your home. At WeatherShield Roofing in Myrtle Beach, we help homeowners choose the right color and material for both performance and curb appeal.

How Roof Color Affects Temperature and Energy Use

When sunlight hits your roof, the surface either reflects the energy back into the atmosphere or absorbs it as heat. Dark colors absorb more solar energy. Light colors reflect more. The absorbed heat transfers through the roofing material into the attic, then through the ceiling into your living space. Your air conditioner then has to remove that extra heat.

Two properties determine how a roof color handles solar energy:

Solar reflectance (also called albedo) measures what percentage of solar energy the surface reflects. A perfectly white surface reflects about 80 percent of solar energy. A standard black surface reflects only about 5 percent. Asphalt shingles range from 5 to 25 percent for dark colors, 15 to 35 percent for medium colors, and 25 to 40 percent for light colors. Cool-roof shingles can reach 40 percent or higher.

Thermal emittance measures how quickly the surface releases absorbed heat back into the atmosphere. Most roofing materials have high emittance (0.80 to 0.95) regardless of color, meaning they release heat efficiently. The exception is bare metal, which has low emittance and holds heat longer.

Best Roof Colors for Myrtle Beach Homes

For Myrtle Beach homeowners, the optimal roof color balances energy efficiency with curb appeal and neighborhood compatibility. Here are our specific recommendations by material type.

Asphalt Shingles

• Best for energy: Weathered Wood, Shakewood, Birchwood, Desert Tan, Fox Hollow Gray
• Best balance of curb appeal and efficiency: Pewter Gray, Slate, Oyster Gray, Driftwood
• If you want dark: Choose a cool-roof product (GAF Timberline CS, CertainTeed Solaris) in Charcoal or Onyx Black for significantly better reflectance than standard dark shingles

Metal Roofing

• Best for energy: White, Light Stone, Galvalume (bare reflective metal), Light Gray
• Best balance: Colonial Red, Terra Cotta, Medium Bronze (with cool-paint finish)
• Avoid: Standard dark colors without cool-paint technology. Dark metal without reflective coating gets extremely hot

Tile and Stone Coated Steel

• Best for energy: Light Terracotta, Sand, Cream, Natural Stone
• Built-in advantage: Tile and stone coated steel have an inherent thermal break from the air gap between the tile and the deck, reducing heat transfer regardless of color

Cool Roof Technology: How Dark Colors Can Still Be Efficient

Modern cool-roof shingles use a breakthrough in granule technology that allows them to reflect invisible infrared radiation even when the visible color is dark. Only about 5 percent of the sun's heat comes from visible light. Approximately 43 percent comes from near-infrared radiation that is invisible to the human eye. Cool-roof granules are engineered to reflect this infrared energy while still absorbing the visible light that creates the color you see.

This means a cool-roof shingle in Charcoal can reflect 25 to 40 percent of total solar energy, compared to only 5 to 15 percent for a standard Charcoal shingle. The visible appearance is virtually identical, but the energy performance is dramatically different.

Cool Roof Shingle Products Available in Myrtle Beach

• GAF Timberline CS (Cool Series): Available in 12+ colors including darker options. Uses Advanced Cool Roof Technology granules. Meets ENERGY STAR requirements in all colors
• CertainTeed Solaris: Reflective roofing with cool colors designed for warm climates. Available in standard architectural shingle profiles
• Owens Corning Cool Roof Collection: Duration and TruDefinition lines with reflective granule options in select colors

ENERGY STAR Rated Roofing: What It Means

The ENERGY STAR program, managed by the EPA, certifies roofing products that meet minimum solar reflectance requirements. To earn the ENERGY STAR label, steep-slope roofing (residential) must have an initial solar reflectance of at least 0.25 (25 percent) and maintain at least 0.15 (15 percent) after three years of weathering. Low-slope (commercial) requirements are higher: 0.65 initial and 0.50 after weathering.

An ENERGY STAR rated roof in Myrtle Beach can reduce peak cooling demand by 10 to 15 percent. While South Carolina does not currently mandate cool roofs, the energy code (based on the IECC) does include provisions for roof reflectance that can be used as a compliance path for meeting energy efficiency requirements.

Some utility companies in South Carolina offer rebates or incentives for installing ENERGY STAR rated roofing. Check with your local utility provider or the Database of State Incentives for Renewables and Efficiency (DSIRE) for current programs.

Cool Roof Coatings: When They Make Sense

Cool roof coatings are liquid-applied reflective coatings that can be applied to existing roofs to increase solar reflectance. They are most commonly used on flat or low-slope commercial roofs with membrane, metal, or built-up roofing systems.

Best candidates for cool roof coatings: Dark commercial flat roofs (EPDM, dark metal, aged BUR), where the coating can transform a surface with 5 percent reflectance to one with 65 to 85 percent reflectance. Cost: $1.50 to $3.50 per square foot applied. Lifespan: 10 to 15 years before recoating.

Not recommended for: Existing asphalt shingles on residential steep-slope roofs. Coatings can void the shingle warranty, interfere with granule adhesion, and trap moisture. For residential roofs, choose cool-roof shingles at the time of roof replacement instead.

How to Choose the Right Roof Color

Choosing a roof color involves balancing several factors beyond energy efficiency.

• Siding color coordination: Your roof should complement your siding, not match it exactly. Warm-toned siding (cream, tan, yellow, red brick) pairs well with warm-toned roofing (weathered wood, desert tan, terra cotta). Cool-toned siding (gray, blue, white) pairs with cool-toned roofing (slate, pewter, charcoal)
• Neighborhood context: Look at surrounding homes and HOA guidelines. An extremely light or white roof may look out of place in a neighborhood where earth tones dominate
• Architectural style: Coastal cottage style homes suit lighter, warmer tones. Modern or contemporary homes can carry darker, bolder roof colors. Traditional homes look best with classic neutral grays
• Maintenance visibility: Lighter colors show algae staining and debris more visibly. Darker colors hide staining but show fading more noticeably. Medium tones in the gray and weathered wood family tend to hide both
• View samples in sunlight: Always view roof color samples outdoors in direct sunlight. Colors look dramatically different in showroom lighting versus actual installation conditions. Colors also appear lighter on a full roof than on a small sample

Attic Insulation: The Multiplier Effect

Roof color matters most in homes with inadequate attic insulation. When insulation is thin or missing, the heat that passes through the roof has a direct path to the living space. In these homes, a light-colored roof provides the most dramatic cooling cost reduction.

In a home with proper insulation (R-38 or higher, as recommended for South Carolina's climate zone), the impact of roof color is reduced because the insulation blocks most of the heat transfer regardless of surface temperature. However, even with excellent insulation, a cooler roof surface extends shingle lifespan, reduces attic temperatures, and improves the performance of any HVAC equipment or ductwork running through the attic.

Our recommendation: if you are replacing your roof and your attic insulation is below R-30, address both at the same time. Adding insulation during a roof repair or replacement is often easier and cheaper than doing it as a separate project because the attic is already being accessed.

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