Class 4 Impact-Resistant Shingles in Minnesota: Insurance Discount Guide (2026)
4min Read
Posted 5.01.2026
Your Twin Cities home was hit by a hail storm last spring. The asphalt roof took visible damage. Your insurance deductible is $5,000. The reroof estimate came in at $32,000. The carrier paid the claim. You moved on.
Six months later, you find out from a neighbor that he installed Class 4 impact-resistant shingles after his hail event — and his insurance carrier reduced his roof premium by 27% per year, every year. Over a 25-year roof life, that is $20,000+ in savings he is collecting that you are not.
Class 4 shingles in Minnesota are not a tax — they are a multi-year insurance arbitrage. The 30-day documentation window after install is when the savings get locked in. I am Noah Bergland, co-owner of Owl Roofing in Shoreview. Below is the actual Minnesota insurance discount mechanics — by carrier, by product, and by paperwork.
TL;DR — Class 4 insurance discount in Minnesota
Bottom line: Major Minnesota carriers (State Farm, Allstate, American Family, USAA) offer 10–30% premium discounts for UL 2218 Class 4 impact-rated roofs. The discount applies to the roof portion of your homeowners premium and stacks each year for the life of the roof. On a typical $2,400/year homeowners policy, that is $240–$720/year in savings — $6,000–$18,000 over 25 years. Documentation must be filed within 30–60 days of installation, with the manufacturer Class 4 certificate of compliance from the contractor.
The UL 2218 Class 4 standard
Underwriters Laboratories Standard 2218 tests asphalt shingles against impact damage. The test drops a 2-inch steel ball from 20 feet onto the shingle — equivalent to a 2-inch hail strike. Shingles that pass without backing crack receive Class 4 rating (highest). Class 3 fails the 2-inch test but passes 1.75 inch. Class 2 passes 1.5 inch. Class 1 passes 1.25 inch.
For Minnesota, where the National Weather Service documents an average of 1.5–2 significant hail events per year in the Twin Cities, Class 4 is the relevant standard.
Minnesota insurance carrier discounts (2026)
| Carrier | Class 4 discount | Documentation required |
|---|---|---|
| State Farm | 10–25% | UL 2218 cert + installer signature |
| Allstate | 15–30% | Manufacturer cert + claim form |
| American Family | 10–20% | UL 2218 cert |
| USAA | 15–28% | UL 2218 cert + installation date |
| Liberty Mutual | 10–20% | UL 2218 cert |
| Auto-Owners | 10–25% | UL 2218 cert + photos |
Discounts vary by policy, ZIP code, and home value. Confirm with your specific carrier before assuming a particular discount level.
The 30-day documentation window
The Class 4 discount is not automatic. After installation, the homeowner must file documentation with the carrier:
Manufacturer UL 2218 certificate of compliance. Provided by the contractor at project close. Must show the specific product name and UL 2218 Class 4 rating.
Installation invoice or completion certificate. Date of install, address, contractor signature, list of materials.
Photos. Some carriers require pre-install and post-install photos.
Most carriers require submission within 30–60 days of installation. After the window, the discount may not apply retroactively.
The 25-year math
Typical Twin Cities homeowners policy: $2,400/year ($200/month). Class 4 discount on the roof portion: 15–25% of the total premium typically applies. That is $360–$600/year in savings.
Over 25 years (typical Class 4 asphalt service life): $9,000–$15,000 in savings. The Class 4 upcharge ($2,000–$5,000 vs standard architectural) typically pays back within 4–7 years.
For luxury Twin Cities homes with higher premiums ($4,000–$8,000/year), the savings scale proportionally. Class 4 on a $200,000 home: $600/year savings. Class 4 on a $1.5M home: $1,200–$2,000/year savings. The economics favor Class 4 dramatically on premium homes.
“Worked with Noah and it was a great experience. He was very responsive to any questions I had.”
— Verified Google review, Twin Cities homeowner
Class 4 product options for Minnesota
The Class 4 asphalt shingles available in the Twin Cities market: GAF Timberline AS II, CertainTeed Northgate ClimateFlex, Owens Corning Duration FLEX, Malarkey Vista/Legacy/Highlander NEX. Synthetic slate (DaVinci, Brava, F-Wave) and most standing seam metal also carry Class 4 ratings.
Frequently asked questions
How much will Class 4 shingles save on my Minnesota insurance?
10–30% premium discount on the roof portion of your homeowners policy. On a typical $2,400/year policy, that is $240–$720/year in savings.
Which Minnesota carriers offer Class 4 discount?
State Farm, Allstate, American Family, USAA, Liberty Mutual, Auto-Owners. Most major Minnesota carriers offer the discount. Confirm specific terms with your agent.
What documentation do I need to file for the Class 4 discount?
Manufacturer UL 2218 certificate of compliance, installation invoice, and photos (in some cases). Submit within 30–60 days of installation per carrier requirements.
How much does Class 4 add to my reroof cost?
$2,000–$5,000 vs standard architectural asphalt on a typical Twin Cities home. The 25-year discount stack ($9,000–$15,000) typically pays back the upcharge within 4–7 years.
Does Class 4 apply to synthetic slate and metal in Minnesota?
Yes. DaVinci, Brava, F-Wave synthetic slate, and most steel and aluminum standing seam products carry UL 2218 Class 4 ratings. Same insurance discount applies.
Where to start
To request a free Class 4 reroof estimate, fill out a short form. We provide UL 2218 certificates of compliance with every Class 4 install — and we walk through the carrier documentation submission with every homeowner.
For more, see best shingles for Minnesota winters, $100K+ reroof guide, and premium exteriors guide.
