Class 4 Shingles in Austin: What the Rating Means and When It's Worth It
Class 4 shingles are shingles that passed the toughest level of a standard lab impact test, UL 2218, where a 2-inch steel ball is dropped from 20 feet onto the same spot twice without cracking the shingle. In the Austin area, where NOAA has logged hail 2 inches and larger in recent years, they are worth a serious look when you are already replacing the roof. They are not hail-proof, and the insurance savings depend on your own policy, so check both before you decide.
What does "Class 4" actually mean?
UL 2218 sorts roof coverings into four classes by the size of steel ball they survive:
Class 1: 1.25-inch ball dropped from 12 feet
Class 2: 1.5-inch ball from 15 feet
Class 3: 1.75-inch ball from 17 feet
Class 4: 2-inch ball from 20 feet
The lab aims the hits at the weakest spots: edges, corners, joints and unsupported areas. A shingle passes if the ball leaves no crack, split or opening. Dents and loose granules on top do not count as a failure.
That last point matters. A Class 4 shingle can pass the test and still come out of a real storm with bruises and granule loss. The rating tells you the mat is harder to break open. It does not tell you the roof will look untouched.
Will Class 4 shingles hold up to Central Texas hail?
They give you more margin, not a promise. NOAA storm reports from 2016 to mid-2026 list 26 hail reports of 2 inches or larger in Travis County and 32 in Williamson County. On September 24, 2023, NOAA logged 4-inch hail in Round Rock and 3-inch hail in Pflugerville. That is bigger than the Class 4 test ball.
What the test leaves out:
Age. UL 2218 tests new shingles, not years of Texas sun and heat.
Real ice. The standard says steel-ball results don't map directly to real hailstones.
Repeated small hail. The Insurance Institute for Business & Home Safety (IBHS) found that rounds of small hail plus weathering make shingles easier to damage in the next big storm.
The rest of the roof. Vents, pipe boots, flashing and ridge caps aren't part of the rating.
In IBHS testing, new standard and impact-resistant shingles both did well against 1.5-inch lab hail. The gap showed up at 2 inches, where the top performers used rubberized (SBS polymer-modified) asphalt.
On Austin-area roofs after a big storm, the ones that hold up best pair a good shingle with sound decking and flashing done right. A Class 4 shingle over tired flashing still leaks at the flashing.
Do Class 4 shingles lower insurance in Texas?
Often, but not automatically. The Texas Department of Insurance (TDI) says roofing that passes an impact test is rated Class 1 to 4, Class 4 gets the highest premium credit, and each insurance company sets its own discount, along with which tests, labels and paperwork it accepts. In September 2026, TDI issued a bulletin encouraging insurers to offer meaningful discounts for steps like impact-resistant roofing. It did not set an amount.
Before you sign a roofing contract, ask your agent three questions:
"What credit would I get for a Class 4 roof at my address, and what would I get for my current roof?"
"What paperwork do you need? Do you take TDI form PC068 or your own form?"
"Does the credit come with a cosmetic damage exclusion?"
The third question is the one people skip. Texas allows an optional endorsement, HO-145, only on policies getting an impact-resistant roof credit. It excludes hail damage that just changes how the roof looks, while hail damage that lets water in stays covered. You have to sign it for it to apply, so know what you're agreeing to.
How do you know you're getting a real Class 4 roof?
A bid that just says "architectural shingle" or a color name tells you nothing. Make sure you get these:
The exact product name in the written estimate, plus the UL 2218 class.
The bundle label. It should show the UL 2218 class, the manufacturer, the brand name and the year made. Keep one. Texas form PC068 asks the roofer to give the owner a label from the packaging.
The PC068 form, filled out by the roofer after the install, if your insurer uses it. Keep the original and send your insurer a copy.
Photos during the install showing the bundles on your roof.
Matching accessories matter too. Ask whether the hip and ridge caps are rated the same as the field shingles.
When is Class 4 worth it, and when isn't it?
Usually worth a look:
You're replacing the whole roof anyway.
You plan to stay in the house for years.
Your insurer confirms a real credit for Class 4 and accepts the product.
Your part of Austin, Round Rock or Pflugerville has taken repeat hail.
Probably not the priority:
Your current roof is sound. Tearing it off just for a rating rarely makes sense.
You only need a repair. A few Class 4 shingles don't make a Class 4 roof.
The decking, flashing or attic ventilation also need work. Fix those first; they decide how long any shingle lasts.
Your home has tile, metal or a low-slope section. Those have their own impact ratings.
Ask for two quotes on the same scope, one standard shingle and one Class 4, so you can see what the upgrade alone changes.
Our shingle roofing page covers how we install a full replacement. If hail already hit your roof, start with our guide to spotting storm and wind damage.
Schedule a free roof inspection in Austin
If you're weighing a new roof after a hailstorm, we'll come look first. We'll get on the roof, take photos, and tell you honestly whether it needs a repair, a replacement, or nothing at all. If a replacement makes sense, the written estimate names the exact shingle and its impact class, and we'll help you document storm damage for your insurance claim. Vantage Roofing backs its work with a 10-year workmanship warranty on full replacements and up to 1 year on service repairs.
Call (737) 383-1768 to schedule a free roof inspection, or contact us online. We're open Monday through Friday 8 to 5 and Saturday 11 to 3.
Frequently asked questions
Can you come look at my roof first and tell me if I even need new shingles?
Yes. Vantage Roofing's free roof inspection starts there. We check the shingles, flashing, vents and decking, take photos of what we find, and tell you plainly whether the roof needs a repair, a replacement, or nothing yet. If it doesn't need replacing, we won't push a Class 4 upgrade. If it does, you get a written estimate that names the shingle and its impact rating.
Are Class 4 shingles hail-proof?
No. Class 4 means the shingle passed the UL 2218 test with a 2-inch steel ball without cracking. Real hail varies in size, shape and speed, and Central Texas has had hail larger than 2 inches. A Class 4 roof can still lose granules, show dents, or take damage at vents and flashing. It is harder to break open, which is why it is worth having a roofer check it after a big storm.
What's the difference between Class 3 and Class 4 shingles?
Both pass the same UL 2218 drop test at different levels. Class 3 survives a 1.75-inch steel ball dropped from 17 feet. Class 4 survives a 2-inch ball from 20 feet, the top level of the test. Insurers that give a credit usually give the most for Class 4. Ask your agent what each one is worth on your policy, and get both quoted on the same scope.
If insurance is replacing my roof after hail, can I upgrade to Class 4?
Often, yes, but ask your adjuster before you choose. Your claim pays for the covered damage under your policy terms, and an upgrade is a separate choice you would likely pay the difference on. Have the upgrade written as its own line so the claim scope stays clear. Also ask your agent whether a credit for the new roof comes with a cosmetic damage exclusion.
Is a metal roof better than Class 4 shingles for hail?
It depends on what you care about. Hail damage on metal is often cosmetic denting, though cracked paint can let rust start, so a cosmetic damage exclusion matters more on a metal roof. Shingles hide small hits better but lose granules and wear with age. Vantage Roofing installs shingle, metal and tile roofs, so we can walk you through the options for your house.
Do Class 4 shingles look different from regular shingles?
From the street, most look like any other architectural shingle. The difference is inside the shingle, such as rubberized asphalt or a reinforced mat. Color choices vary by product line, so if your HOA has a color list, check it against the Class 4 options before you pick. The bundle label and your written estimate are how you confirm what's on the roof.
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