The Homeowner’s Guide to Class 4 Shingles: Comparing the Top Options

When you live in hail-prone areas like Rapid City, Box Elder, Spearfish or anywhere across the Black Hills, your roof takes a beating. Hail, high winds, and harsh temperature swings all shorten a roof’s lifespan. That’s why Class 4 impact-resistant shingles are one of the smartest investments you can make.

Class 4 shingles earn the highest rating in the UL 2218 impact test, which simulates large hail striking the roof. If a shingle doesn’t crack or lose protective granules after repeated impacts, it earns the coveted Class 4 designation.

But not all Class 4 shingles are created equal. Below we’ll compare the four biggest players in the market—GAF, Malarkey, Owens Corning, and CertainTeed and show you the pros, cons, and what makes each brand unique.

GAF Class 4 Shingles (Timberline® AS II)

Overview:

GAF is the largest roofing manufacturer in North America, and their Timberline® ArmorShield II is one of the most installed Class 4 shingles in hail-prone regions.

What Stands Out:

  • Wide availability and color options.

  • Combines the best-selling Timberline look with impact resistance.

  • Very strong enhanced warranties available.

  • Unlimited Wind Warranty available

  • DuraSeal sealant ensures the shingles seal together quickly and hold tight.

Considerations:

  • Slightly heavier than some competitors, which can make installation more labor intensive.

Malarkey Class 4 Shingles (Legacy®, Vista®)

Overview:

Malarkey is known for innovation. They use SBS polymer-modified asphalt (rubberized asphalt), which makes shingles more flexible and impact-resistant. They also integrate recycled materials and smog-reducing granules, appealing to eco-conscious homeowners.

What Stands Out:

  • Industry-leading granule adhesion (helps shingles last longer).

  • Rubberized asphalt absorbs hail impacts better than traditional shingles.

  • Environmentally friendly manufacturing practices.

Considerations:

  • Can be soft and easily damaged when installed in hot weather.

  • Availability can be limited depending on location.

Owens Corning Class 4 Shingles (Duration® Storm & Duration FLEX®)

Overview:

Owens Corning is a trusted name in building materials, and their Duration® Storm and Duration FLEX® shingles are both UL Class 4 rated. They feature the company’s patented SureNail® Technology, which provides reinforced nail zones for stronger wind resistance.

What Stands Out:

  • Many color options available.

  • Rubberized asphalt (in the FLEX line) gives extra durability in cold and hot weather.

  • Very good warranties available.

Considerations:

  • Pricing can be higher than GAF’s comparable options.

CertainTeed Class 4 Shingles (NorthGate® SBS)

Overview:

CertainTeed makes some of the heaviest and most premium-looking shingles on the market. Their NorthGate® SBS line uses polymer-modified asphalt for impact resistance and delivers a bold, upscale look.

What Stands Out:

  • Exceptional curb appeal with deep colors and dimensional profiles.

  • Very durable, with strong granule adhesion.

  • Great option for homeowners wanting both performance and design.

Considerations:

  • Among the most expensive asphalt shingles available.

  • Can get soft and easily damaged when installed in very hot weather.

Key Takeaways for Homeowners

  • All four brands offer excellent Class 4 options that will protect against hail and extend your roof’s life.

  • GAF is the most widely available, offers strong warranties, and offers strong value.

  • Malarkey stands out for flexibility and eco-friendly innovation.

  • Owens Corning shines with its SureNail® Technology and strong warranties.

  • CertainTeed is ideal for homeowners who want premium aesthetics along with impact resistance.

Should You Invest in Class 4 Shingles?

If your home is in Rapid City or the surrounding Black Hills, the answer is almost always yes. Class 4 shingles can:

  • Save you from costly storm damage.

  • Extend the life of your roof.

  • Qualify you for insurance discounts.

At Built Right Roofing & Construction, we’ve installed every one of these shingles and can help you compare options based on your home’s unique needs, your budget, and the look you want.