Should I Choose Class 3 or Class 4 Impact-Resistant Shingles?

Introduction: Class 3 vs Class 4 shingles

Quick answer: Class 4 shingles carry the highest impact-resistance rating under the UL 2218 test standard, and in Texas they generally earn the largest insurance premium credit. Class 3 shingles cost less and still offer meaningful impact resistance. For most Conroe-area homeowners weighing Class 3 vs Class 4 shingles, the choice comes down to one calculation: the extra installation cost of Class 4 vs. the confirmed annual insurance savings your agent quotes. Neither class is hail-proof.

Replacing your roof is a chance to decide whether impact-resistant shingles are right for your home. For homeowners in Conroe, Montgomery, The Woodlands, Willis, and surrounding communities, understanding the options can help you make a more informed investment.

Class 3 and Class 4 shingles offer different impact-resistance ratings. Depending on your insurance company and policy, either option may also qualify for a homeowners insurance discount.

What Is the Difference Between Class 3 and Class 4 Shingles?

Impact-resistant shingles are evaluated through standardized testing that measures how well they withstand specific impacts. The most common standard is UL 2218, which rates roofing materials from Class 1 (lowest) to Class 4 (highest). Some manufacturers also test to FM 4473, which uses ice balls instead of steel balls and uses a similar Class 1–4 scale.

In UL 2218 testing, steel balls are dropped onto the same spot of a roof sample twice. The material passes a class if it shows no cracking or rupture.

Class 3 shingles

• UL 2218 test ball:75-inch steel ball
• Drop height: About 17 feet
• Rating level: Second-highest
• Typical upfront cost: Lower
• Texas insurance credit: Possible, usually smaller
• Best fit: Budget-focused replacements wanting an upgrade over standard shingles

Class 4 shingles

• UL 2218 test ball: 2-inch steel ball
• Drop height: About 20 feet
• Rating level: Highest
• Typical upfront cost: Higher (varies by product)
• Texas insurance credit: Possible, usually largest
• Best fit: Homeowners prioritizing maximum impact resistance and insurance savings

Class 3 shingles provide an impact-resistant option that may offer a practical balance between protection and cost.

Class 4 shingles achieve a higher impact-resistance classification under the same testing standard. They may be worth considering when comparing upgrade costs and available insurance savings.

Are impact-resistant shingles hail-proof?

No. Neither classification means a shingle is hail-proof. Actual performance depends on storm conditions (hailstone size, density, and wind speed), installation quality, roof age, attic ventilation, and other factors. A lab rating is a useful comparison tool, not a guarantee.

That said, the data is encouraging: an industry study of Texas homes found that roofs rated impact-resistant under the Texas Department of Insurance program had a 40 percent lower claims rate.

Could Upgrading Lower Your Insurance Premium?

Some insurance companies offer discounts for qualifying impact-resistant roofing products. Here is how it works in Texas, according to the Texas Department of Insurance (TDI):

• Roofing tested to a recognized standard is classified as Class 1, 2, 3, or 4, and Class 4 receives the highest premium credit.
• Each insurance company sets its own discount amount, the test standards it accepts, and the paperwork it requires.
• After installation, contractors commonly complete TDI Form PC068 – Impact-Resistant Roofing Installation Form. TWIA requires it; other insurers may accept it or use their own form.

Eligibility and savings vary by insurer, policy, and the specific shingle installed, so the only reliable number is the one your agent confirms in writing.

Questions to ask your insurance agent before you choose

1. Does my policy offer a discount for Class 3 or Class 4 shingles, and how much is each?
2. Is the specific product (brand and line) I’m considering eligible?
3. What documentation will you need: Form PC068, the invoice, manufacturer labels, or certificates?
4. Would the upgrade affect any roof coverage terms, such as a cosmetic damage exclusion or a change in how roof claims are settled?
5. How soon after installation does the discount apply?

How to compare Class 3 vs. Class 4 costs

Compare the confirmed annual savings with the additional installation cost when evaluating your options. A simple way to do it:

Payback period = (Class 4 price − Class 3 price) ÷ (Class 4 annual savings − Class 3 annual savings)

If the payback period is shorter than the number of years you plan to stay in your home, Class 4 may be the better value. If it’s longer, or your insurer offers no Class 4 credit, Class 3 may be the smarter budget choice. Our 0% financing options can also help spread the cost of a roof replacement.

Which Option Fits Your Situation?

• Just went through a hailstorm? If you’re replacing a storm-damaged roof, ask whether upgrading now could reduce damage and claims next storm season. We can provide a free roof inspection to document what you’re dealing with.
• Planning on a tight budget? Class 3 can be a cost-conscious step up from standard shingles. Get both prices and your insurer’s quote before deciding.
• Focused on long-term maintenance? Class 4 may make sense if you plan to stay put and your carrier offers a meaningful credit.
• First-time homeowner? Start by learning how your roof system works, then ask your agent the questions above before your roof needs replacing.