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. You get a roof that survives storms a standard roof wouldn't, and an insurance premium that reflects the lower risk.

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.

State Farm, Allstate, Farmers, USAA, and most of the rest will knock 15 to 30 percent off your premium if your roof is Class 4. Over the life of the roof, the annual savings often cover the upcharge in five to seven years. After that you're ahead.

Rules vary by carrier and by county. Call your agent, ask for the IR discount, 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)
• You want the full insurance discount
• 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 IR. Nicer looking product. Color holds up better in Texas sun than most of its competitors.

Atlas Pinnacle Pristine. Strong Class 4 with the best algae resistance in the category. That matters more in the humidity down in Central Texas than it does in DFW.

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 almost always the right move. The insurance discount alone makes the math work, and the actual performance upgrade is real.

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