Class 3 vs. Class 4 Impact-Resistant Shingles

If you live in Eureka or anywhere in the greater St. Louis area, you know hail and severe storms are part of life. When it’s time to replace your roof, one of the smartest choices you can make is upgrading to impact-resistant shingles. But what’s the difference between Class 3 and Class 4 shingles—and is the upgrade worth it?

As a veteran-owned roofing company based in Eureka, Perfect Pitch Roofing & Exteriors, Inc. helps homeowners across St. Louis, Jefferson, St. Charles, and Franklin Counties choose the right roofing system for their homes and budgets. Here’s a clear breakdown.

Impact-resistant shingles are designed and tested to better withstand hail and debris. They’re rated using a standardized test (UL 2218) and assigned a class from 1 to 4:

• Class 1: Lowest impact resistance; withstands the impact of a 1.25-inch steel ball.
• Class 2: Moderate-low impact resistance; withstands the impact of a 1.5-inch steel ball.
• Class 3: Moderate-high impact resistance; withstands the impact of a 1.75-inch steel ball.
• Class 4: Highest impact resistance; withstands the impact of a 2-inch steel ball.

For Missouri homeowners concerned about hail, Class 3 and Class 4 are the most relevant.

• Class 3 Shingles
• Designed to withstand medium-sized hail impacts
• Better protection than standard shingles, but not the highest rating
• Often a good step up if you’re on a tighter budget
• May or may not qualify for insurance discounts, depending on your carrier
• Class 4 Shingles
• Highest impact-resistance rating available
• Tested to withstand larger steel ball impacts without cracking
• Offer the best protection against hail and flying debris
• More likely to qualify for insurance premium discounts (check with your agent)
• Can help extend the life of your roof in storm-prone areas

For many homeowners in Eureka, Wildwood, Fenton, Pacific, and surrounding communities, Class 4 shingles are a smart investment:

• We see frequent hail and wind storms that can prematurely age standard shingles.
• The cost difference between standard architectural shingles and Class 4 options is often modest compared to the potential savings in repairs and insurance claims.
• Some insurance companies offer discounts for Class 4 roofs (always confirm with your agent before deciding).

When we meet with you for a roof replacement estimate, we’ll:

• Review your home’s location and storm history
• Discuss your budget and how long you plan to stay in the home
• Show you Class 3 and Class 4 options from trusted manufacturers
• Explain potential pros, cons, and insurance considerations in plain language

If you’re already replacing your roof after hail damage, upgrading to a Class 4 shingle can be a great way to add long-term protection.