Core4® Technology

Many Great Styles - Same Core4® Protection

Core4® is the most innovative development in asphalt shingle manufacturing and consists of these four features:

Made from Advanced Polymer Materials

PolyCore™ Technology is what makes shingles with Core4™ stronger and longer-lasting than other leading shingle brands.

Resist Impact from Hail and High Wind

Shingles with Core4™ Technology come with the highest wind warranty in the industry.

Bends and Resists Breaking in the Cold

Built with FlexCore™ Technology, these shingles bend and flex - when others crack and tear.

Maintain Stability in Severe Weather Conditions

These shingles are built to mitigate the effects of expansion and contraction due to temperature changes.

StormMaster® Shingles With Core4® Technology

StormMaster® Shingles With Core4® Technology

Designed to Withstand Nature's Extremes

StormMaster® Shake and Pinnacle® Impact shingles are UL2218 Class 4 Impact rated. the test consists of simulating the speed and terminal velocity of a 2'' hail stone falling from the sky. To meet Class 4 Impact criteria, the shingle must show no evidence of fractures or cracks on the backside.

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PolyCore® Technology is what makes shingles with Core4® stronger and longer-lasting than other leading shingle brands. StormMaster® Shake shingles with Core4® are made from enhanced virgin polymers, which means the asphalt core is scientifically engineered to perform better with increased consistency and reduced variability. Because of PolyCore®, Core4® shingles:

  • Protect and extend the life of your roof.
  • Perform better than standard asphalt technology.

Color Combinations

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StormMaster Shake | Pewter
Pinnacle Impact | Black Shadow
Pinnacle Impact | Desert Shake IR

StormMaster® Shake shingles with Core4® Technology come with the highest wind warranty in the industry. Core4® enhanced polymers, coupled with the Atlas double FASTAC® adhesive sealant line, create a strong, thermally bonded roofing system.

In fastener pull-through tests, which examine the strength of the nail within the Atlas 1 1/2” Sweet Spot™ nailing area, shingles with Core4® performed more than 50 percent better than standard asphalt shingles.

Color Combinations

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StormMaster Shake | Hearthstone
Pinnacle Impact | Black Shadow
Pinnacle Impact | Heather IR

StormMaster® Shake shingles with FlexCore® Technology bend and flex when others crack and tear. Their elasticity is what makes them stronger in two ways:

  1. Better tear strength: Because these shingles bend and flex, they exceed the industry’s standard tear strength requirement by 50 percent – even in cold-weather installations.
  2. Flatter installation: Shingles that don’t lay flat won’t seal properly during installation. FlexCore® makes them more pliable, which means they lay flatter, seal more effectively, and provide greater protection for your home.

During its lifetime, your roof experiences thermal shock, or wide variations in heat and cold. StormMaster® Shake shingles are built to mitigate the effects of expansion and contraction due to temperature changes. ThermalCore® Technology also leads to better granule adhesion.

Even as the shingles expand and contract, they are less prone to shedding granules. Granule adhesion is important because shingle granules play a critical role in protecting your roof from the elements. Premature granule loss can lead to accelerated aging, asphalt exposure, and roof deterioration.