Roof care
Impact-resistant (Class 4) shingles in Kansas City: are they worth it?
By Roof InspectorsUpdated 3 min read
The short answer
If you live in Kansas City long enough, you’ll replace a roof after hail. When that day comes, impact-resistant shingles are worth a serious look.
What “Class 4” means
Impact-resistant shingles are rated using the UL 2218 test, which drops steel balls of increasing size onto a roofing sample. The balls are aimed at the weakest spots, such as edges, corners and joints.
Class 4 is the highest rating: the product withstood the largest ball in the test, 2 inches in diameter dropped from 20 feet. The test doesn’t measure how a roof holds up as it ages and weathers.
How they’re different
Many Class 4 asphalt shingles use a more flexible, polymer-modified (SBS) asphalt that absorbs impacts instead of fracturing. Others use reinforced mats or different construction. Metal, some synthetic products, and certain tile products can also carry Class 4 ratings.
Curious what storms were recorded near you?
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- Doesn’t file an insurance claim
- One local partner, never a pile-on
The tradeoffs
Benefits
- Better resistance to hail damage
- Often better resistance to granule loss
- Possible insurance premium discounts with some insurers
Considerations
- Higher upfront cost than standard architectural shingles
- Not hail-proof — very large hail, like the 3-inch-plus stones reported in the March 10, 2026 Northland storm, can still cause damage
- Product choice and installation quality still matter
Are they worth it in Kansas City?
Kansas City sees significant hail regularly. From 2016–2025, the National Weather Service logged hail 1 inch or larger within 30 miles of downtown on about 8.1 days a year (see Kansas City hail by year).
If you’re replacing your roof anyway, ask your roofer to price a Class 4 product next to a standard one, so you see the real difference for your roof. Factors to weigh:
- Your storm history. See how many significant storms are on record near your address, free in about 30 seconds.
- How long you’ll stay. Longer stays get more value from durability.
- Insurance discounts. Ask your agent what, if anything, they offer.
Questions to ask your roofer
- Which Class 4 products do you install, and why?
- Is the rating for the exact product line you’re quoting?
- How does the warranty differ from a standard shingle?
- Can you provide documentation for my insurance company?
More in our questions to ask a roofer before you sign.
Sources
Sources (2) · UL Standards & Engagement, IBHS and RICOWI
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Common questions
Are Class 4 shingles hail-proof?
Do Class 4 shingles lower insurance premiums?
This guide is general information for homeowners, not professional, insurance, or legal advice. How we write and update guides.