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Class 4 impact-rated shingles.

The highest impact rating a shingle can earn — UL 2218 Class 4. Built with polymer-modified or ultra-dense construction to shrug off Minnesota hail. Many insurance carriers offer premium discounts when you install a Class 4 roof.

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Why Class 4

The highest impact rating a shingle can earn.

UL 2218 is the industry standard impact test — a 2" steel ball dropped from 20 feet, twice on the same spot, with no cracking on the back of the shingle. Class 4 is the top tier. For a state that averages multiple severe hail events per year, it's the upgrade that pays itself back.

Maximum impact rating

UL 2218 Class 4 — survives a 2" steel ball dropped from 20 feet without cracking.

Possible insurance discount

Many MN carriers offer 10–30% premium discounts on the wind/hail portion of your policy.

Longer real-world life

Polymer-modified asphalt stays flexible in cold weather and resists bruising from hail.

Three flagships

Three Class 4 shingles. One certified installer.

We're certified to install all three of the top Class 4 architectural shingles on the market. Each takes a different engineering approach to the same problem — surviving hail. We'll bring samples of all three to your free inspection.

Owens Corning

TruDefinition Duration FLEX

SBS polymer-modified asphalt formula stays flexible in cold weather and rebounds from hail impact. Built around the same patented SureNail Technology as the standard Duration line.

UL 2218 Class 4 impact resistance (highest rating)
SBS polymer-modified asphalt for cold-weather flexibility
SureNail Technology — woven fabric nailing strip
StreakGuard algae resistance protection
130 mph wind warranty as a Total Protection system
Limited lifetime warranty + 10-year algae coverage

Manufacturer spec sheet

GAF

Timberline UHDZ with UltraMat

GAF's ultra-premium architectural shingle. UltraMat construction delivers a denser, more dimensional profile plus the patented LayerLock and StrikeZone nailing technology that made HDZ #1.

UL 2218 Class 4 impact resistance (highest rating)
UltraMat technology — denser, thicker, more dimensional
LayerLock + StrikeZone nailing zone (600% larger)
Time-Release algae-fighting technology (25-year)
WindProven limited wind warranty — no max wind speed
Lifetime limited warranty with GAF System Plus install

Manufacturer spec sheet

CertainTeed

Landmark ClimateFlex

Landmark's polymer-modified upgrade. Engineered with rubberizing polymers that improve impact resistance and granule adhesion in cold and high-temperature swings.

UL 2218 Class 4 impact resistance (highest rating)
Polymer-modified asphalt for added flexibility
Dual-layer fiberglass-reinforced construction
StreakFighter algae-resistance technology (10-year)
130 mph wind warranty when installed with starter & ridge
Lifetime limited transferable warranty

Manufacturer spec sheet

Hail-damaged roof — the case for Class 4 impact-rated shingles in Minnesota

The insurance math

Class 4 often pays for itself.

Most major Minnesota homeowners insurance carriers — State Farm, American Family, Allstate, Auto-Owners, and others — offer premium discounts on the wind & hail portion of your policy when you install a UL 2218 Class 4 roof. Combined with fewer claims and longer service life, the upgrade typically pays back within the first decade.

10–30% wind/hail premium discount (varies by carrier)
We provide the UL 2218 certificate for your insurer
Eligible for full system manufacturer warranties
Better resale value and home inspection grades
Fewer claims = better long-term insurability
Same install crew, same warranty registration

Ask about the Class 4 upgrade Back to roofing

Installed to spec

A Class 4 shingle is only Class 4 if it's installed right.

We install every Class 4 system as a complete, matched roof — same-brand starter, underlayment, ice & water shield, ridge vent, and accessories. That's what keeps the impact rating valid and the manufacturer warranty enforceable.

Full tear-off

We strip to the deck, inspect every sheet, and replace anything compromised before underlayment.

Manufacturer system

Matched starter, underlayment, hip & ridge — no mix-and-match that voids the warranty.

UL 2218 certificate

We provide the documentation your insurance carrier needs to apply the Class 4 discount.

Warranty registered

We register the full system warranty on your behalf, including the impact-rating coverage.