Quick Answer: Yes, Class 4 impact-resistant shingles can qualify you for a homeowners insurance discount of 10 to 28 percent in Iowa. On a typical Des Moines policy, that translates to roughly $250 to $700 in annual savings. The upfront cost is higher than standard shingles, but most homeowners recoup the difference in under five years through insurance savings alone.
If you are weighing a class 4 shingles insurance discount against the higher upfront cost, you are asking the right question. Iowa sits at the southern edge of Hail Alley, and Des Moines homeowners see some of the highest insurance premiums in the country because of it. The average Iowa homeowners policy now runs around $2,500 a year, and that number jumped 28 percent in 2025 alone. Anything you can do to bring that number down is worth a serious look.
Andrew’s Roofing has installed Class 4 shingles across the Des Moines metro for 18 years. Here is the honest breakdown of what the discount actually looks like, how much Class 4 shingles cost, and whether the math works out in your favor.
What Are Class 4 Shingles?
Class 4 is the highest impact resistance rating a shingle can earn. The rating comes from a test called UL 2218, where a two-inch steel ball gets dropped from 20 feet onto the shingle, twice in the exact same spot. If the shingle shows no cracking, splitting, or visible damage after both hits, it earns the Class 4 designation.
Standard architectural shingles use a traditional asphalt formula that gets brittle over time. Class 4 shingles use SBS (Styrene-Butadiene-Styrene) polymer-modified asphalt, which is basically asphalt blended with rubber. Instead of cracking when hail hits, the shingle flexes and absorbs the impact.
That difference matters in Iowa. Des Moines hail season runs from April through September, and we see damaging storms almost every year. A standard shingle that takes a direct hit from quarter-sized hail or larger will bruise, lose granules, and start breaking down. A Class 4 shingle can take that same hit and walk away clean.
How Much Can You Save on Insurance with a Class 4 Shingles Insurance Discount in Iowa?
Most Iowa insurance carriers offer premium discounts between 10 and 28 percent when you install Class 4 shingles. The exact number depends on your carrier, your policy, and your location within the state. State Farm, for example, specifically lists Iowa as an eligible state for impact-resistant roofing discounts.
Here is what that looks like on a real Des Moines policy:
If your annual premium is $2,500 and your carrier offers a 20 percent discount on the dwelling portion, you save roughly $400 to $500 a year. Over 10 years, that is $4,000 to $5,000 back in your pocket. Over the full life of the roof, which is typically 30 years or more with Class 4 shingles, the savings can reach $12,000 to $15,000.
The key step is to call your insurance agent before you install. Not every carrier offers the same discount, and some require specific documentation or pre-approval. Ask your agent three questions: Do you offer a discount for Class 4 shingles? What percentage is the discount? What paperwork do you need from my roofer?
How Much Do Class 4 Shingles Cost Compared to Standard?
Class 4 shingles typically cost 30 to 40 percent more than standard architectural shingles. On a typical Des Moines home, that upgrade adds roughly $1,500 to $3,000 to the total project cost depending on home size and roof complexity.
That sounds like a big jump, but run the numbers against your insurance discount. If you save $400 a year on your premium, a $2,000 upgrade pays for itself in five years. Every year after that, the savings go straight into your pocket. And that does not even count the money you save by avoiding hail damage repairs and insurance claims down the road.
If your roof already needs to be replaced, the upgrade cost shrinks even further. You are already paying for tear-off, labor, and materials. The difference between standard and Class 4 is just the material upgrade, not a whole separate project. For a full breakdown of what a new roof costs in Des Moines right now, check out our guide on how much a new roof costs in Des Moines.
Do Class 4 Shingles Actually Hold Up in Iowa Hail?
They do. We have seen it firsthand on hundreds of roofs across the metro. After major hail events, we inspect roofs with Class 4 shingles and roofs with standard shingles side by side. The standard shingles show bruising, granule loss, and cracking. The Class 4 shingles typically come through with no visible damage at all.
That performance matters for more than just avoiding repairs. Every time you file an insurance claim, your premiums can go up and your carrier can choose not to renew your policy. A roof that shrugs off hail means fewer claims, which means your rates stay lower and your coverage stays intact.
If you have already dealt with hail damage on your current roof, you know how stressful the process can be. Our guide on how to spot hail damage on your roof in Iowa walks through what to look for and what to do next.
How Do You Get the Class 4 Shingles Insurance Discount After Installation?
Getting the discount is not automatic. You need to provide your insurance company with documentation proving that Class 4 shingles were installed on your home. Here is the process:
Before installation, call your insurance agent and confirm the discount is available on your policy. Ask what documentation they need.
After installation, your roofer should provide you with a manufacturer certification showing the specific shingle product is UL 2218 Class 4 rated. Your roofer should also provide a signed installation certificate confirming what was installed, including the product name, manufacturer, and date of installation.
Submit both documents to your insurance agent. Then check your next policy renewal to make sure the discount was applied. If it is not showing up, call your agent and follow up.
This is one area where working with a certified contractor matters. Andrew’s Roofing is a GAF Master Elite Contractor and a certified FORTIFIED installer, and we provide all the documentation your insurance company needs to process the discount. You should not have to chase paperwork after your roof is done. Check out our full roofing services to see what we offer.
Is the Class 4 Shingles Insurance Discount Worth It in Iowa?
For most Des Moines homeowners, the answer is yes. Iowa’s combination of frequent hail, rising insurance premiums, and available carrier discounts makes Class 4 one of the few home upgrades that genuinely pays for itself.
Here is the simple version of the math. If you pay $2,000 more for Class 4 shingles and save $400 a year on insurance, the upgrade pays for itself in five years. Your roof lasts 30 years. That is 25 years of pure savings after breakeven, plus fewer repairs, fewer claims, and a roof that holds up when the next storm rolls through.
The one thing we always tell homeowners: call your insurance agent first. Confirm the discount, get the percentage in writing, and then decide. The math is almost always in your favor, but you want to see your actual numbers before you commit.
Get an Honest Answer for Your Home
If you are thinking about Class 4 shingles for your next roof, we are happy to walk you through the options. Andrew’s Roofing Company is a family-owned, GAF Master Elite Contractor and FORTIFIED certified installer serving Des Moines, Ankeny, Waukee, West Des Moines, Urbandale, and the surrounding communities since 2008.
We will give you a straight answer on whether Class 4 makes sense for your home, your insurance situation, and your budget. No pressure, no gimmicks.
Contact us today for a free estimate.
