Metal Roof Solar Reflectance by Color
Color is the single largest variable in metal roof energy performance. A white PVDFPVDF (polyvinylidene fluoride)A resin-based paint system containing 70% PVDF resin (by weight of total resin solids). The highest-performance paint coating available for metal roofing. Kynar 500 and Hylar 5000 are the two licensed PVDF formulations.A true PVDF coating must contain at least 70% PVDF resin. Some manufacturers use 50% blends and market them misleadingly. Always confirm the 70% specification.Why it matters: PVDF coatings resist chalking, fading, and chemical degradation far longer than SMP or acrylic. Expect 30-40 years of color retention in full Gulf Coast sun. This is what separates a premium metal roof from a budget one.Learn more →-coated metal roof reflects 65-75% of solar energy (SRISolar Reflectance Index (SRI)A composite metric (0-100+) that combines solar reflectance and thermal emittance to measure how hot a roof surface gets in the sun. Higher SRI = cooler roof. Calculated per ASTM E1980.ENERGY STAR requires initial SRI of 25+ for steep-slope roofing. Light-colored PVDF-coated metal roofs routinely hit SRI 50-78. Even medium-toned metal colors outperform dark asphalt shingles.Why it matters: A high-SRI metal roof (typically 25-70+) can reduce attic temperatures by 20-40°F compared to dark asphalt shingles with SRI near 0. This directly lowers cooling costs, which matters enormously on the Gulf Coast.Learn more → 70-82). A charcoal metal roof reflects 10-15% (SRI 5-12). The difference between the best and worst color is greater than the difference between metal and shingles. Below is comprehensive reflectance data for every common color category, using representative values from CRRCCRRC (Cool Roof Rating Council)An independent organization that measures and publishes solar reflectance and thermal emittance ratings for roofing products. CRRC ratings are required for ENERGY STAR certification and many building code cool-roof credits.CRRC tests both initial and 3-year weathered values using standardized protocols. Weathered values matter more because all roofs lose some reflectance over time due to soiling. A PVDF metal roof retains reflectance better than most other materials.Why it matters: CRRC provides verified, apples-to-apples comparison data for energy performance. Their Rated Products Directory lets you compare solar reflectance and emittance values across manufacturers, colors, and coating types before you buy.Learn more →-rated products.
How to Use This Data
The tables below show representative ranges for solar reflectanceSolar reflectanceThe fraction of solar energy reflected by a roof surface, measured on a 0-to-1 scale (or 0-100%). A white PVDF metal roof reflects about 0.65-0.75; dark asphalt shingles reflect about 0.05-0.15.Solar reflectance is measured per ASTM C1549 or E903. It decreases slightly over time due to soiling and weathering; CRRC reports both initial and 3-year aged values.Why it matters: Higher reflectance means less heat absorbed into the roof deck and attic. On the Gulf Coast, where cooling loads dominate energy bills, a reflective metal roof can cut cooling costs by 10-25%.Learn more →, thermal emittanceThermal emittanceThe ability of a roof surface to release absorbed heat as infrared radiation, measured on a 0-to-1 scale. Most painted metal roofs have emittance of 0.80-0.90; bare (unpainted) metal is much lower at 0.03-0.10.Bare/mill-finish Galvalume has very low emittance and can actually trap more heat than dark shingles despite being shiny. Always specify a painted finish for energy performance.Why it matters: High emittance means the roof cools itself faster by radiating heat away. A painted metal roof with 0.85 emittance re-emits most absorbed heat before it transfers to the attic. This is why painted metal stays cooler than bare metal even in the same color.Learn more →, and SRISolar Reflectance Index (SRI)A composite metric (0-100+) that combines solar reflectance and thermal emittance to measure how hot a roof surface gets in the sun. Higher SRI = cooler roof. Calculated per ASTM E1980.ENERGY STAR requires initial SRI of 25+ for steep-slope roofing. Light-colored PVDF-coated metal roofs routinely hit SRI 50-78. Even medium-toned metal colors outperform dark asphalt shingles.Why it matters: A high-SRI metal roof (typically 25-70+) can reduce attic temperatures by 20-40°F compared to dark asphalt shingles with SRI near 0. This directly lowers cooling costs, which matters enormously on the Gulf Coast.Learn more →. Individual products vary within each color category based on the specific pigment formulation and coating type. Use these ranges to narrow your color choice, then check the exact values in the CRRC Rated Products Directory for the specific product you are considering.
All values are for painted metal roofing — primarily PVDFPVDF (polyvinylidene fluoride)A resin-based paint system containing 70% PVDF resin (by weight of total resin solids). The highest-performance paint coating available for metal roofing. Kynar 500 and Hylar 5000 are the two licensed PVDF formulations.A true PVDF coating must contain at least 70% PVDF resin. Some manufacturers use 50% blends and market them misleadingly. Always confirm the 70% specification.Why it matters: PVDF coatings resist chalking, fading, and chemical degradation far longer than SMP or acrylic. Expect 30-40 years of color retention in full Gulf Coast sun. This is what separates a premium metal roof from a budget one.Learn more → (Kynar/Hylar) coatings. SMP coatings have slightly lower initial values and degrade faster. The thermal emittance for all painted metal is similar (0.83-0.90), so the primary variable between colors is solar reflectance.
ENERGY STARENERGY STAR (roofing)A U.S. EPA program that certifies roofing products meeting minimum solar reflectance thresholds. For steep-slope metal roofing: initial solar reflectance of 0.25+ and 3-year aged reflectance of 0.15+.Most light-to-medium-colored PVDF metal roofs easily qualify. Even some darker colors meet the threshold with infrared-reflective pigment technology. Check the ENERGY STAR Roof Products list for specific product certifications.Why it matters: An ENERGY STAR-rated metal roof can reduce cooling costs by 10-25% compared to a non-reflective roof. It may also qualify for utility rebates, insurance discounts, or tax incentives depending on your state and utility provider.Learn more → requires initial solar reflectance of 0.25 or higher for steep-slope roofing. Colors that meet this threshold are marked in the tables below. Use our color-heat explorer tool to see how these values translate to cooling cost savings. Preview colors on your home with our roof color visualizer.
White and Off-White
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Bright White | 0.68-0.75 | 0.60-0.68 | 78-82 | Yes |
| Bone White / Ivory | 0.62-0.70 | 0.55-0.63 | 72-78 | Yes |
| Almond / Cream | 0.55-0.65 | 0.48-0.58 | 62-72 | Yes |
White and off-white provide the highest energy performance available. These colors reflect the most solar energy across the visible and infrared spectrum. They are the standard for commercial cool roofs and are increasingly popular on residential metal roofs in the Gulf Coast. Aesthetic concerns are the primary reason homeowners choose other colors — performance-wise, white is unmatched.
Tan, Beige, and Light Earth Tones
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Light Tan / Sand | 0.48-0.58 | 0.42-0.52 | 55-65 | Yes |
| Sandstone / Light Clay | 0.42-0.52 | 0.36-0.46 | 48-58 | Yes |
| Desert Tan / Khaki | 0.38-0.48 | 0.32-0.42 | 42-52 | Yes |
| Terra Cotta / Warm Clay | 0.32-0.40 | 0.26-0.34 | 35-44 | Yes |
Light earth tones are the sweet spot for most Gulf Coast homeowners. They provide 60-80% of white's energy performance while offering warm, neutral aesthetics that complement most home styles and satisfy HOA guidelines. Sand and light tan are among the most popular metal roof colors on the Gulf Coast for this reason.
Gray Tones
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Light Gray / Ash | 0.42-0.55 | 0.36-0.48 | 48-62 | Yes |
| Pewter / Medium Gray | 0.32-0.42 | 0.26-0.36 | 35-47 | Yes (most) |
| Slate / Dark Gray | 0.18-0.28 | 0.14-0.22 | 18-30 | Marginal |
| Charcoal | 0.10-0.18 | 0.08-0.14 | 8-18 | No (standard pigments) |
| Charcoal (IR-reflective) | 0.25-0.35 | 0.20-0.28 | 25-38 | Yes |
Gray is the most common metal roof color in the Gulf Coast region, and the range of energy performance within the gray family is enormous. Light gray and pewter perform well — comparable to tan tones. Dark slate and charcoal perform poorly unless formulated with IR-reflective pigments. If you want a gray roof and energy performance, stay on the lighter side of the spectrum.
Green Tones
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Light Sage / Seafoam | 0.38-0.48 | 0.32-0.42 | 42-52 | Yes |
| Medium Green / Evergreen | 0.25-0.35 | 0.20-0.28 | 25-38 | Yes (most) |
| Forest Green / Hunter | 0.12-0.22 | 0.08-0.16 | 10-22 | No (standard) |
| Forest Green (IR-reflective) | 0.25-0.32 | 0.20-0.26 | 25-35 | Yes |
Light sage and seafoam greens are popular for traditional Gulf Coast homes and provide good energy performance. They are common on coastal-style homes in Florida, Alabama, and Mississippi. Dark forest greens, like dark grays, need IR-reflective pigments to achieve meaningful energy benefit.
Blue Tones
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Light Blue / Sky | 0.40-0.50 | 0.34-0.44 | 45-55 | Yes |
| Medium Blue / Colonial | 0.22-0.32 | 0.18-0.26 | 22-35 | Marginal |
| Navy / Dark Blue | 0.08-0.15 | 0.06-0.12 | 5-14 | No (standard) |
| Navy (IR-reflective) | 0.20-0.28 | 0.15-0.22 | 20-30 | Marginal |
Blue pigments tend to absorb more solar energy than greens or tans of similar perceived lightness. Light blue performs well, but medium and dark blues drop off quickly. Navy is one of the poorest-performing colors for energy, even with IR-reflective pigments. If you want blue and energy performance, choose the lightest shade available.
Red, Brown, and Copper Tones
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Light Copper / Burnished | 0.35-0.45 | 0.28-0.38 | 38-50 | Yes |
| Rustic Red / Colonial Red | 0.30-0.40 | 0.25-0.34 | 32-44 | Yes |
| Medium Bronze | 0.22-0.32 | 0.18-0.26 | 22-35 | Marginal |
| Dark Bronze / Cocoa | 0.12-0.22 | 0.08-0.16 | 10-22 | No (standard) |
| Dark Bronze (IR-reflective) | 0.25-0.33 | 0.20-0.27 | 25-36 | Yes |
| Dark Red / Barn Red | 0.18-0.28 | 0.14-0.22 | 18-30 | Marginal |
Red pigments reflect infrared energy better than blues and greens at the same visible lightness. This is why colonial red and rustic red perform surprisingly well — they appear medium-toned but reflect a meaningful amount of infrared energy. Red-oxide pigments have been used in metal roofing for centuries, and their energy properties are a bonus.
Black
| Color | Solar Reflectance (Initial) | Solar Reflectance (3-Year Aged) | SRI (Initial) | ENERGY STAR |
|---|---|---|---|---|
| Black (standard) | 0.04-0.08 | 0.04-0.06 | 0-5 | No |
| Black (IR-reflective) | 0.18-0.28 | 0.14-0.22 | 18-30 | Marginal |
Standard black is the worst-performing color for energy — it absorbs 92-96% of solar energy. IR-reflective black improves this to 72-82% absorption, which is better but still poor compared to lighter colors. If you must have black, IR-reflective formulations are essential — they reduce roof surface temperature by approximately 15-25 degrees Fahrenheit compared to standard black. But even with IR-reflective pigments, black performs worse than any medium-toned standard color.
Color Energy Ranking: Quick Reference
| Energy Tier | SRI Range | Colors | Cooling Savings vs Dark Shingles |
|---|---|---|---|
| Excellent | 65-82 | White, ivory, bone, cream | 20-30% |
| Very Good | 45-65 | Light tan, light gray, sand, almond | 15-25% |
| Good | 25-45 | Pewter, sage, clay, rustic red, desert tan | 10-18% |
| Fair | 15-25 | Slate, medium green/blue, IR-reflective darks | 5-12% |
| Poor | 0-15 | Charcoal, black, navy, dark bronze (standard) | 2-5% |
The practical advice: choose the lightest color you find aesthetically acceptable. If you love white, you get the best energy performance available. If you prefer tan or light gray, you still get excellent performance. If you need a dark color for HOA or aesthetic reasons, insist on IR-reflective pigments and set realistic expectations — the energy savings will be modest.