Every shingle manufacturer will tell you their product is the toughest on the market. Every sales rep has a brochure that makes their shingle sound bulletproof. But here in Colorado Springs, where hail is not a hypothetical concern but a regular reality, we decided to stop taking anyone’s word for it.
We took six of the major Class 4 roofing shingles, built a makeshift drop test rig, rented a lift, and put them through the same impact resistance test the industry uses to award that Class 4 rating — and then some. What we found was surprising, humbling, and genuinely useful for any Colorado Springs homeowner trying to make a smart decision about their next roof.
Why We Decided to Test Shingles Ourselves
Tamko recently made a bold claim — that their new Hail Guard shingle performs beyond Class 4 impact resistance standards. That kind of claim deserves scrutiny, not just acceptance. But rather than single out one brand, we decided to make it a fair fight and test all the major players at the same time.
The goal was simple: put every shingle through the same test under the same conditions and let the results speak for themselves. No manufacturer sponsorships, no bias, no predetermined outcome. Just an honest look at how these products actually perform when something hits them hard.
If you’ve ever wondered whether Class 4 impact resistant shingles are actually worth it for Colorado Springs homeowners, this test gives you some real data to work with.
The Industry Standard: How Class 4 Roofing Shingles Are Officially Tested
Before we get into the results, it helps to understand what the Class 4 rating actually means and how it’s earned.
The official industry test for impact resistance is the UL 2218 standard. The test involves dropping a two-inch steel ball from a height of twenty feet onto the shingle — twice, in the same spot. What the test is looking for is whether the impact breaks the mat of the shingle. If the mat doesn’t crack or fracture under that impact, the shingle earns a Class 4 rating — the highest available.
That sounds rigorous. And in some ways it is. But as you’ll see from our results, there are real questions about whether a smooth steel ball dropped from a fixed height truly replicates what happens when an irregular ice ball slams into your roof at seventy or eighty miles per hour.
The Six Shingles We Tested
We tested the following six shingles, all of which carry or claim Class 4 impact resistance ratings:
- Tamko Hail Guard
- GAF Armor Shield
- IKO Nordic
- Owens Corning Duration Flex
- Malarkey Legacy
- CertainTeed Northgate
Two of these shingles — the Malarkey Legacy and the CertainTeed Northgate — stand apart from the others in one important way: weight. Both come in at roughly 260 to 265 pounds per square, compared to the 210 to 220 pound range of the other four. That extra mass means more material between your home and whatever the Colorado sky throws at it. Going into the test, those two were the ones we expected to perform best.
As you’ll see, the results didn’t entirely cooperate with that expectation.
If you want a deeper understanding of what separates these shingle types before diving into the results, our guide on how to choose the best asphalt shingle for your house in 2026 breaks down every major category in plain language.
Round One: The Standard Class 4 Test
We dropped the two-inch steel ball from just over twenty-two feet — slightly higher than the official test height — onto each shingle twice in the same spot, then measured the dent size on each one.
Here’s how the results shook out:
- GAF Armor Shield — approximately one-inch dent. Did not break the mat.
- Owens Corning Duration Flex — approximately three-quarter inch dent. Did not break the mat.
- Malarkey Legacy — approximately five-eighths inch dent. Did not break the mat.
- IKO Nordic — approximately half-inch dent. Did not break the mat.
- CertainTeed Northgate — approximately half-inch dent. Did not break the mat.
- Tamko Hail Guard — approximately half-inch dent on the double-layer section. Barely visible. Did not break the mat.
Technically, all six shingles passed the standard Class 4 test — none of them broke the mat. But the size of the dents varied significantly. Three shingles stood out from the rest with the smallest dents and moved on to round two: the IKO Nordic, the CertainTeed Northgate, and the Tamko Hail Guard.
Worth noting is what didn’t make it through — the Malarkey Legacy, despite being one of the two heaviest shingles in the test, did not perform well enough to advance. That was unexpected. It’s a good reminder that weight alone doesn’t tell the whole story.
One other observation worth flagging: none of the shingles lost granules during this round. That’s significant, because granule loss is the most common indicator of hail damage we look for when inspecting roofs after a real storm. More on that shortly.
Round Two: Beyond Class 4 — Raising the Stakes
For round two, we swapped the two-inch ball for a two-and-a-half inch ball — significantly heavier and well beyond the official Class 4 test parameters. We dropped it once on each of the three finalists.
- IKO Nordic — approximately seven-eighths inch dent. Broke through the mat.
- CertainTeed Northgate — approximately one-inch dent. Broke through the mat.
- Tamko Hail Guard — approximately half-inch dent. Did not break the mat.
The Tamko Hail Guard was the clear winner of round two. It produced the smallest dent and was the only shingle that did not break the mat under the heavier ball. That result was genuinely surprising. The Hail Guard was not the shingle we expected to come out on top — and intellectual honesty requires us to say so clearly.
Round Three: The Bonus Round — A Real Pitcher, A Real Baseball
Here’s where things got interesting — and where the most important insight of the entire test emerged.
We brought in a former college fastball pitcher and had him throw a baseball at the Tamko Hail Guard at somewhere between eighty and ninety miles per hour. The steel ball tests had not dislodged granules from any of the shingles. The baseball did.
That single observation raises a serious question about the industry standard test itself. A smooth steel ball dropped from a fixed height does not behave the way hail behaves. Real hail is irregular in shape, and it splatters on impact. That splattering effect appears to be what dislodges granules — not necessarily the force of the impact alone.
The industry test checks for a broken mat. But in the real world, granule loss is what we actually see on damaged roofs after a hailstorm. If the test isn’t replicating granule loss, it may not be fully capturing what real hail does to a shingle. That gap between lab performance and real-world performance is something every Colorado Springs homeowner should keep in mind when evaluating shingle options.
What the Results Actually Mean for Your Roof
So what should a Colorado Springs homeowner take away from all of this?
First, the Class 4 rating matters — but it is a floor, not a ceiling. All six shingles technically passed the standard test, but their performance varied considerably. Choosing any Class 4 shingle is better than choosing a non-rated product, but assuming all Class 4 shingles perform equally is a mistake.
Second, weight doesn’t guarantee performance. The Malarkey Legacy is one of the heaviest shingles in the test and didn’t make it past round one. The results are a reminder that shingle performance is more complex than any single characteristic — weight, composition, and construction all play a role.
Third, the industry standard test has real limitations. A smooth steel ball is not hail. The fact that granule loss — the most common real-world indicator of hail damage — only appeared when a baseball was thrown at the shingle suggests that the official test may not be telling the whole story.
For a deeper look at how real-world hail performance compares across shingle brands, our article on the best asphalt shingle for Colorado Springs homes covers years of post-storm inspection experience across hundreds of roofs in El Paso County.
The Bottom Line: Test Winner vs. Real-World Performance
The Tamko Hail Guard won this test. That is the honest result and it deserves to be stated clearly.
But here’s the distinction that matters most for Colorado Springs homeowners: winning a controlled drop test and performing well through years of real Colorado hailstorms are two very different things.
The CertainTeed Northgate did not win this test. But it remains the shingle I recommend most often to homeowners here in Colorado Springs — and that recommendation is built on something no lab test can replicate: years of going back to inspect Northgate roofs after major hail events in our area and consistently seeing them hold up when other shingles didn’t. I installed the Northgate on my own home in December of 2016, and after multiple significant hail storms since then, it has performed exactly as I hoped it would.
The Tamko Hail Guard is a newer product. It performed impressively in this test, and that absolutely earns it a closer look. But it doesn’t yet have the real-world track record in Colorado Springs hail conditions that the Northgate has built over nearly a decade of installations and post-storm inspections.
What this test really proves is the point we’ve been making for years: not all Class 4 roofing shingles are equal. The label is a starting point for your research, not the end of it. The shingle you choose for your Colorado Springs home should be based on a combination of test performance, real-world track record, and the honest recommendation of a roofing contractor who has actually inspected these products after a storm — not just read the brochure.
If a hailstorm has already hit your neighborhood and you’re not sure how your current roof held up, don’t wait to find out. Our guide on what to do after your Colorado Springs roof is hit by a hailstorm walks you through exactly what steps to take.
Ready to Talk About Your Roof?
If you’d like an honest assessment of your current roof’s condition or want to talk through which shingle makes the most sense for your home, we’re always happy to have that conversation. There’s no pressure and no sales pitch — just straightforward information to help you make the best decision for your home.
Schedule a roof inspection by calling Homestead Roofing directly, or if you’d like to get a ballpark number right now, you can get a free instant quote for your roof in about sixty seconds — no obligation required.
Frequently Asked Questions About Class 4 Roofing Shingles in Colorado Springs
What is a Class 4 roofing shingle?
A Class 4 roofing shingle is the highest impact resistance rating available under the UL 2218 industry standard. To earn this rating, a shingle must withstand a two-inch steel ball dropped from twenty feet without the mat cracking or fracturing. In hail-prone areas like Colorado Springs, Class 4 shingles are strongly recommended and may qualify for meaningful homeowners insurance premium discounts.
Are all Class 4 roofing shingles the same?
No — and that’s one of the most important things Colorado Springs homeowners need to understand. While all Class 4 shingles meet the same minimum test standard, performance varies significantly between brands and products. Our own shingle drop test demonstrated meaningful differences in dent size and mat integrity across six major Class 4 products tested under identical conditions.
Does a heavier shingle always perform better in hail?
Not necessarily. In our test, the Malarkey Legacy — one of the two heaviest shingles tested — did not advance past round one, while lighter shingles outperformed it. Shingle performance is influenced by a combination of weight, material composition, and construction design. Weight is one factor worth considering, but it shouldn’t be the only one.
Do Class 4 roofing shingles qualify for an insurance discount in Colorado?
Yes, many homeowners insurance companies offer premium discounts for homes with Class 4 rated shingles installed. The discount amount varies by insurer but can be significant. Beyond the discount itself, a more durable shingle means fewer claims over the life of the roof — which protects your claims history and saves you from repeated deductible payments.
How do I know if my current roof has Class 4 impact resistant shingles?
The best way to find out is to have a qualified roofing contractor inspect your roof and identify the shingle brand and model currently installed. From there, you can look up whether that specific product carries a Class 4 rating. If you’re unsure, Homestead Roofing is happy to take a look and give you an honest assessment.