Class 4 Impact-Resistant Roofing — Save 18–32%/Year
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UL 2218 Class 4 · Insurance Discount Shingles

Class 4 Impact Resistant
Roofing — Save 18–32%
On Insurance Per Year

In Indiana, Illinois, and Michigan's hail corridor, upgrading to Class 4 UL 2218 shingles is one of the highest-ROI investments a homeowner can make. The $800–$1,400 upgrade premium recovers in 12–18 months through annual insurance savings — then generates $800+ per year in net savings for the life of the shingles. One contractor. Free estimate. Carrier discount confirmed before materials are ordered.

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The UL 2218 Standard

What Is a Class 4 Impact-Resistant Shingle?

UL 2218 is the roofing industry's hail impact resistance rating system. Class 4 is the highest rating — achieved by passing a test that no standard architectural shingle can pass: a 2-inch steel ball dropped from 20 feet onto the same spot twice, with no cracking or substrate penetration.

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The UL 2218 Test

2" steel ball. 20-foot drop. Same spot twice. No cracking permitted. Standard architectural shingles fail at Class 1 or 2. Class 4 is the maximum rating.

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Four Rating Classes

Class 1 (1" ball) · Class 2 (1.25") · Class 3 (1.5") · Class 4 (2"). Only Class 3 and 4 qualify for most insurance discounts. Class 4 gets the highest discount tier.

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Extended Service Life

Class 4 resists the granule loss that shortens standard shingle life. Achieves 28–35 effective years in high-hail markets vs. 18–22 for standard architectural.

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Same Installation

Class 4 shingles install identically to standard architectural. Same tools, same process, same roofing system. The difference is material composition only.

ROI Calculator

What Is the Financial Return on Class 4 Shingles?

The math is straightforward — and your matched contractor confirms your carrier's actual discount rate before materials are ordered so the ROI is locked in before you commit.

Sample ROI — Indianapolis Home · State Farm 25% Discount

Standard arch. shingles installed$8,200
Class 4 shingles installed$9,400
Upgrade premium+$1,200
Current annual premium$3,200
25% discount savings/year−$800/yr
Payback period18 months
10-year net savings$6,800
Shingle lifespan savings$22,800+

Actual discount varies by carrier, home, deductible, and state. Confirm with your agent. See full Class 4 discount guide →

Qualifying Carriers

Which Insurance Carriers Offer Class 4 Discounts?

Always confirm with your agent before ordering materials. Discount percentages vary by state, county, home age, and deductible. Get the confirmation in writing — by email from your agent — before your contractor orders shingles.

Indiana Farm Bureau
18–32% discount
State Farm
20–28% discount
Pekin Insurance
15–25% discount
Erie Insurance
15–22% discount
Allstate
10–20% discount
American Family
12–20% discount
Auto-Owners
10–18% discount
West Bend Mutual
10–15% discount
Travelers
Varies by state

What Do Homeowners Say After Upgrading to Class 4 Shingles?

"The contractor confirmed our Indiana Farm Bureau discount before ordering anything. We got 28% off our annual premium — $896 per year savings. The upgrade cost us $1,100 more than standard shingles. We broke even in 15 months. Now it's pure savings every year for the next 30 years."

Brad & Susan H. — Greenwood, IN · Class 4 with IFB 28% discount · March 2026

"We had hail damage twice in 6 years. The second time we upgraded to Class 4 during the insurance replacement. The contractor provided the Certificate of Installation — State Farm applied a 22% discount at the next renewal. Haven't had a claim since. The shingles are genuinely different."

Nicole A. — Schaumburg, IL · Class 4 after second hail claim · December 2025

"I was skeptical about the ROI claim. The contractor showed me the actual carrier form, confirmed my Erie Insurance rate, and calculated the exact payback. 19 months. I asked my agent the next day and she confirmed the discount. Everything the contractor said was accurate."

Mark T. — Fort Wayne, IN · Class 4 GAF Timberline RS · February 2026

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FAQ

What Are the Most Common Class 4 Shingle Questions?

A Class 4 UL 2218 shingle is the highest-rated impact-resistant roofing product in the residential market. UL 2218 is the testing standard: a 2-inch steel ball is dropped from 20 feet onto a conditioned shingle sample — twice on the same spot. Class 4 shingles show no cracking, tearing, or substrate penetration. Standard architectural shingles fail at Class 1 or Class 2. Class 4 shingles cost $800–$1,400 more than standard architectural shingles for a typical 2,000 sq ft home — and qualify for 18–32% annual insurance premium discounts in hail-corridor markets.
Carriers offering Class 4 impact-resistant shingle discounts in Midwest markets include: Indiana Farm Bureau (18–32%), State Farm (20–28%), Pekin Insurance (15–25%), Erie Insurance (15–22%), Allstate (10–20%), American Family (12–20%), Auto-Owners Insurance (10–18%), and West Bend Mutual (10–15%). Discount availability and percentage vary by state, county, home characteristics, and deductible. Always confirm with your agent before ordering materials — and get the discount confirmation in writing.
Class 4 impact-resistant shingles cost $800–$1,400 more than standard architectural shingles for a typical 2,000 sq ft home — or approximately $8,000–$12,000 installed total. The ROI calculation: for a homeowner paying $3,200 annually with a 25% discount, annual savings are $800. Payback period: 12–18 months. 10-year net savings: $6,800. 30-year net savings: $22,800. In Indiana, Illinois, and Michigan hail-corridor markets, the Class 4 upgrade is almost always the financially correct choice.
The most commonly specified Class 4 UL 2218 products include: GAF Timberline HDZ RS (same appearance as standard HDZ), Owens Corning Duration STORM (SureNail Technology + Class 4), CertainTeed Landmark IR (StreakFighter algae resistance + Class 4), Atlas StormMaster Shake and Slate (premium appearance profiles), IKO Cambridge IR (strong Midwest availability), and TAMKO Heritage IR. All achieve Class 4 UL 2218 certification and qualify for carrier discounts. Your matched contractor will confirm which products qualify with your specific carrier.
Yes — the discount is not automatic. After installation, you need to: request a Certificate of Installation from your contractor (documenting the specific UL 2218 Class 4 product installed); submit the certificate to your insurance agent with a written request for the impact-resistant shingle discount; confirm the discount will be applied at your next renewal. Some carriers apply mid-term; most apply at renewal. The full discount is not retroactive — it begins from the renewal date after submission.
Class 4 shingles are worth considering even outside the primary hail corridor because: the impact resistance also improves wind resistance and general durability; the material grade is higher than standard architectural; and as insurance carriers expand discount programs, availability in lower-hail markets is growing. That said, the strongest ROI case is in Indiana, Illinois, and Michigan markets averaging 4+ hail events per year. Your matched contractor can advise whether Class 4 is the right recommendation for your specific location and carrier.

How Do You Get a Class 4 Estimate With Discount Confirmation?

Your matched contractor confirms your carrier discount rate, installs qualifying Class 4 shingles, and provides the Certificate of Installation your carrier needs. Free match.

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