GAF vs. CertainTeed vs. Owens Corning: Which Brand Makes the Best Cool Shingles?

If you've decided that cool roof shingles make sense for your home — and for most Virginia homeowners replacing a roof, they do — the next question is which brand to go with. GAF, CertainTeed, and Owens Corning are the three dominant manufacturers in the residential roofing market, and all three offer strong ENERGY STAR®-certified cool shingle lines. But they take meaningfully different approaches to how they engineer reflective performance, and the differences matter when you're making a decision that will sit on your home for 25 to 50 years.

Here's a detailed, honest look at how each brand's cool shingle technology compares — across performance, aesthetics, product variety, warranty coverage, and overall value.

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How Cool Shingle Performance Is Measured

Before diving into the brand comparison, it's worth establishing the metrics that actually matter. Cool shingle performance is rated by the Cool Roof Rating Council (CRRC) on two key properties:

Solar Reflectance (SR) — how much of the sun's solar energy the shingle reflects away from the roof surface. Higher is better. ENERGY STAR® certification for steep-slope roofs requires an initial SR of at least 0.25.

Thermal Emittance (TE) — how efficiently the shingle releases any heat it does absorb back into the atmosphere rather than transferring it into the structure below. Higher is better, with most quality cool shingles rating 0.75 or above.

Both metrics are independently tested and publicly available through the CRRC product database — so performance claims can be verified, not just taken at a manufacturer's word. With that context, here's how the three brands stack up.

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GAF: The Reflective Dark Shingle Pioneer

Cool Roof Product Line: Timberline HDZ® Reflector Series

GAF is the largest roofing manufacturer in North America, and their contribution to cool roof technology is genuinely distinctive: they've engineered meaningful solar reflectance into shingle colorways that look, to the naked eye, like standard dark charcoal and slate gray roofs.

The Timberline HDZ® Reflector Series uses GAF's proprietary EcoDark® granule technology — a coating process applied to darker-toned granules that allows them to reflect a significant portion of near-infrared solar energy while maintaining their visual depth and richness. The result is an ENERGY STAR®-certified shingle that homeowners can't distinguish from a standard dark Timberline HDZ on the street — but that performs meaningfully better under summer sun.

What sets GAF apart:

• Best-in-class performance for dark colorways — the closest any manufacturer gets to genuine cool roof performance in a charcoal or slate tone
• The Timberline HDZ® platform is already one of the most installed shingles in the country, meaning the Reflector Series benefits from a proven, widely understood installation standard
• Strong ENERGY STAR® and CRRC certification across the Reflector Series lineup
• Backed by GAF's Lifetime Limited Warranty and eligible for the Golden Pledge® warranty through Master Elite certified installers — one of the most comprehensive roofing warranties available

Best for: Homeowners committed to a dark roof aesthetic who want the best available thermal performance within that color palette.

Consideration: GAF's cool roof line is more focused than CertainTeed's or Owens Corning's — fewer colorway options outside the darker range, though the dark options are best-in-class.

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CertainTeed: The Broadest Cool Roof Portfolio

Cool Roof Product Lines: Landmark® Solaris®, Landmark® PRO Solaris®, Landmark® Solaris® AR, Presidential Solaris®

CertainTeed offers the most extensive cool roof shingle portfolio of the three brands — four distinct product lines under the Solaris® umbrella, covering everything from standard architectural shingles to premium shake-profile luxury products. This breadth makes CertainTeed the strongest option for homeowners who want both reflective performance and maximum flexibility in aesthetics and budget.

Landmark® Solaris® The entry point to CertainTeed's cool roof lineup, the Landmark® Solaris® reflects more than 40% of UV rays and is available in multiple colorways. It features CertainTeed's StreakFighter® copper-infused granules that provide algae resistance alongside reflective performance — a meaningful bonus in Virginia's humid climate where algae streaking is a common problem.

Landmark® PRO Solaris® A step up from the standard Solaris®, the PRO version features a multi-layer construction with a dedicated reflective layer engineered for stronger CRRC performance. It also carries a Class 3 impact resistance rating — particularly relevant for Virginia homeowners in hail-prone areas of Northern Virginia and the Shenandoah Valley.

Landmark® Solaris® AR Available in Graphite and Weathered Wood — two of CertainTeed's most popular colorways — the Solaris® AR combines cool roof performance with enhanced algae resistance for homeowners who want reflective performance in a more natural-toned aesthetic.

Presidential Solaris® CertainTeed's premium offering, the Presidential Solaris® delivers cool roof performance in a thick, hand-split shake profile for homeowners who want luxury aesthetics alongside energy efficiency. Available in light-to-medium colorways with strong reflectance ratings.

What sets CertainTeed apart:

• Most diverse cool roof product lineup of the three brands — something for every budget and aesthetic
• Strong CRRC ratings across the Solaris® family, with independently verified performance data
• StreakFighter® technology addresses algae alongside reflectance — a practical Virginia-specific advantage
• Impact resistance available in the PRO line — relevant for storm season protection

Best for: Homeowners who want the widest range of color and product options within a cool roof line, or who are interested in premium shake aesthetics with reflective performance.

Consideration: With four product lines, the Solaris® family requires more navigation to find the right fit — your contractor should help you identify which specific line matches your performance goals and budget.

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Owens Corning: The Performance and Durability Specialist

Cool Roof Product Lines: TruDefinition® Duration® COOL, TruDefinition® Duration® COOL Plus

Owens Corning's approach to cool roofing is more focused than CertainTeed's but more performance-oriented than a simple colorway upgrade. Their Duration® COOL line integrates reflective granule technology with their patented SureNail® Technology — a reinforced nailing zone that provides exceptional wind resistance in conditions where standard shingles frequently fail.

For Virginia homeowners who need to balance cool roof performance with storm resilience, Owens Corning's approach is particularly compelling.

TruDefinition® Duration® COOL The flagship cool roof product from Owens Corning, Duration® COOL shingles use solar-reflecting granules that reduce roof temperature and limit the thermal cycling that degrades asphalt over time. ENERGY STAR® certified, with the SureNail® strip providing a 130 mph wind resistance rating — well above the standard for Virginia's summer storm and nor'easter season.

TruDefinition® Duration® COOL Plus An upgrade from the standard COOL line, the COOL Plus adds Class 3 impact resistance — one step below the maximum Class 4 rating — while maintaining the full cool roof performance of the base Duration® COOL. For homeowners in areas with documented hail exposure, the COOL Plus delivers a combination of reflective performance and impact protection that neither GAF nor CertainTeed's standard cool roof lines match at this price point.

What sets Owens Corning apart:

• SureNail® Technology provides industry-leading wind resistance — directly relevant to Virginia's storm season
• Duration® COOL Plus combines cool roof certification with Class 3 impact resistance — a meaningful combination for storm-exposed homes
• Strong thermal performance data backed by ENERGY STAR® certification
• Backed by Owens Corning's Platinum Protection Limited Warranty through certified contractors

Best for: Homeowners who want cool roof performance combined with maximum wind and impact resistance — particularly in Northern Virginia neighborhoods with documented storm exposure.

Consideration: Owens Corning's cool roof colorway selection is more limited than CertainTeed's, and the EcoDark® dark-tone reflectance technology that sets GAF apart isn't replicated in the Duration® COOL line.

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Which Brand Is Right for Your Home?

• Choose GAF if you're committed to a dark roof and want the best reflective performance available in that color palette
• Choose CertainTeed if you want the widest range of color options, product tiers, and premium aesthetics within a cool roof line
• Choose Owens Corning if storm resilience is a priority alongside energy performance — particularly if your home is in an area with documented wind or hail exposure

All three are strong products from manufacturers with decades of track records in Virginia's climate. The best choice ultimately depends on your home's specific exposure, your aesthetic preferences, and which performance priorities matter most to you.

Want to see physical samples from all three brands side by side and get a straight recommendation for your home? That's exactly what Exterior Techs does — at no cost, no pressure, no commitment. Request your free estimate → or call (804) 848-TECH.

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Certified to Install All Three

As certified installers for GAF, CertainTeed, and Owens Corning, Exterior Techs has access to the full product lineup from all three manufacturers — and the expertise to match the right brand and product to your home's specific situation. Every roof we install is backed by our Lifetime Workmanship Guarantee.

Three great brands. One contractor certified to install them all. Let's find the right fit for your home.