Are GAF Timberline HDZ Shingles Class 4 Impact-Resistant? The Truth About Storm Protection

Understanding Impact Resistance for North Dakota Homes

For homeowners in North Dakota and throughout the Bakken region, selecting the right roofing materials isn't just about aesthetics—it's about protection. With our region's severe weather patterns including hail, high winds, and occasional tornados, impact resistance isn't optional—it's essential.

GAF Timberline HDZ shingles have become increasingly popular among homeowners, but there's often confusion about their impact resistance rating. Let's clear this up with straightforward facts you can trust.

What Does "Class 4" Actually Mean?

Before addressing GAF Timberline HDZ specifically, it's important to understand what a Class 4 rating represents:

• Class 4 is the highest impact resistance rating available for roofing materials
• This rating is determined through UL 2218 testing, where 2-inch steel balls are dropped from 20 feet onto shingles
• To achieve Class 4 certification, shingles must show no evidence of fractures or cracks on the back surface after impact

This rigorous testing simulates the impact of large hailstones—a common concern for North Dakota homeowners.

The Truth About GAF Timberline HDZ Shingles

Standard GAF Timberline HDZ shingles are NOT Class 4 impact-resistant.

The standard Timberline HDZ line carries a Class 3 impact resistance rating, which offers good protection but doesn't meet the highest standard for severe hail-prone regions like ours.

However, GAF does offer a specific product line designed for maximum impact resistance:

GAF Timberline HDZ RS (Reflector Series™)

This specialized version of the Timberline HDZ shingle line does carry a Class 4 impact resistance rating. The HDZ RS shingles feature:

• Specialized reinforcement technology
• Enhanced durability against impacts
• The same LayerLock™ technology and aesthetic appeal as standard HDZ shingles

Why Impact Resistance Matters in North Dakota

For our customers across North Dakota and the Bakken region, selecting Class 4 shingles offers several significant benefits:

1. Insurance Savings: Many insurance companies offer premium discounts for homes with Class 4 impact-resistant roofing
2. Longer Roof Lifespan: Higher impact resistance typically translates to fewer repairs and replacements
3. Better Storm Damage Protection: Critical during our severe weather seasons
4. Peace of Mind: Knowing your home has the highest level of impact protection available

Making the Right Choice for Your Home

At B & C Northern Construction, we believe in transparent information that helps you make informed decisions. If maximum impact resistance is your priority, we recommend:

• GAF Timberline HDZ RS (Class 4) for maximum hail protection
• Standard GAF Timberline HDZ (Class 3) for good all-around performance where extreme impact resistance isn't the top concern

Both options feature GAF's innovative LayerLock™ technology and StrikeZone™ nailing area, which enhance wind resistance up to 130 mph.

Insurance Claim Assistance for Storm Damage

If your current roof has sustained hail or wind damage, our team can help. We specialize in insurance claim assistance and can work directly with your insurance company to ensure you receive the coverage you deserve.

Get a Professional Assessment

Not sure which shingle option is right for your home? Our drone roof inspections provide detailed information about your current roof's condition and help us make recommendations tailored to your specific needs.

Contact B & C Northern Construction today for a free, no-obligation quote. We're committed to providing quality craftsmanship and reliable service that protects what matters most—your home.

Building the future. Restoring the past.