Class 3 vs. Class 4 Impact-Resistant Shingles: What Texas Homeowners Need to Know

Why this matters in Texas

Texas leads the country in hail claims. It's not even close. In a rough season, DFW and the Austin corridor both see multiple storms with stones over two inches — big enough to crack a standard shingle on contact.

Impact-resistant (IR) shingles are built to absorb that hit and spread the force out instead of fracturing. Class 4 is the highest UL 2218 impact-resistance rating. It can reduce the likelihood of functional damage, but no asphalt shingle is hail-proof. Actual performance depends on hail size, wind speed, roof age, installation quality, and the specific product's construction.

How the rating works

UL 2218 is the standard. They drop a steel ball on the shingle from various heights and see what happens.

• Class 1: 1.25" ball from 12 feet
• Class 2: 1.5" ball from 15 feet
• Class 3: 1.75" ball from 17 feet
• Class 4: 2" ball from 20 feet — top of the scale

Class 4 is what insurance carriers recognize for premium discounts. That's the one that matters for most Texas homeowners.

The insurance discount

Here's where it gets interesting.

Impact-resistant roofing may qualify for a premium discount. Eligibility and savings vary by insurance company, policy, product, and required documentation. Confirm the amount and any related policy changes with your insurance agent before selecting a roof.

Call your agent, ask whether they offer an impact-resistant roof credit, and ask what documentation they need. Usually it's the manufacturer's product certification, which we can provide.

Class 3 vs Class 4: worth the jump?

Class 3 is fine. Some carriers recognize it for a smaller discount, and the product holds up better than standard asphalt. But in DFW and Austin, Class 3 will still show cosmetic damage after a bad storm.

Class 4 is the right call if:

• You plan to be in the house seven or more years
• You're in DFW, Austin, or the Sherman–Denison corridor (all high-frequency hail zones)
• Your carrier offers an impact-resistant credit you want to pursue
• You're doing a full replacement — the cost difference between standard and Class 4 is usually $500 to $1,500 on a typical home

For a partial repair matching an existing Class 3 roof, sticking with Class 3 may just be more practical.

The brands we put down

Owens Corning Duration Storm. One of the most commonly installed Class 4s in DFW. Good warranty, easy to source, consistent out of the bundle. Safe default.

TAMKO Heritage IR. Solid product a little cheaper than OC. Popular in Austin.

CertainTeed Landmark ClimateFlex. Nicer looking product. Color holds up better in Texas sun than most of its competitors. (Standard Landmark is Class 3 — ClimateFlex is the Class 4 product.)

Atlas Pinnacle Impact. Atlas's Class 4 line, with strong algae resistance. That matters more in the humidity down in Central Texas than it does in DFW. (Atlas Pinnacle Pristine is Class 3, not Class 4.)

All four are products we install. What makes sense for your house depends on the existing color, what your neighbors have, and your budget.

Bottom line

If you're replacing a roof in Texas — whether it's storm damage or old age — Class 4 is worth serious consideration. It is the highest UL 2218 impact-resistance rating and can reduce the likelihood of functional damage, though no asphalt shingle is hail-proof. Whether the math works depends on your carrier's credit, which varies by insurance company, policy, product, and documentation.

Get in touch and we'll walk through what fits your house and your carrier.