Impact-Resistant Class 3 vs Class 4 Shingles
Class 4 impact-resistant shingles survive a 2-inch steel ball dropped from 20 feet; Class 3 survives 1.75-inch at the same height, per UL 2218. Class 4 is the correct specification for DFW hail corridors including Wylie, Plano, Frisco, Rockwall, and Collin County. Texas insurance carriers discount Class 4 10-35% on the windstorm premium.
- GAF Master Elite (top 2%)
- BBB A+ accredited since 2019
- 25+ years in business
- 4.9★ (172 reviews)
- 600+ projects completed
TL;DR: Which One Wins?
Choose Class 4 if:
- Home sits in DFW hail corridor (Wylie, Plano, Frisco, Rockwall)
- Insurance carrier offers Class 4 discount over Class 3
- Owner plans to stay 10+ years
- Goal is lowest total cost after insurance premium savings
Choose Class 3 if:
- Property sits outside the primary hail corridor
- Class 3 is the only rating the specified shingle line carries
- Insurance discount is equal between Class 3 and Class 4
- Budget cap is rigid and Class 4 premium is not justified
Class 3 Impact Resistant vs Class 4 Impact Resistant: Head-to-Head Comparison
| Attribute | Class 3 Impact Resistant | Class 4 Impact Resistant | Winner |
|---|---|---|---|
| UL 2218 test ball size | 1.75 inch | 2 inch | Class 4 Impact Resistant |
| Drop height for test | 20 feet | 20 feet | Tie |
| Kinetic energy at impact | Approx 20 ft-lb | Approx 30 ft-lb | Class 4 Impact Resistant |
| Installed cost (per sqft, 2026 DFW) | $5.00-$7.00 | $5.50-$8.00 | Class 3 Impact Resistant |
| Texas insurance discount | 5-20% | 10-35% | Class 4 Impact Resistant |
| Typical lifespan in DFW | 20-25 years | 25-30 years | Class 4 Impact Resistant |
| Manufacturer warranty | 30-50 years | 30-50 years | Tie |
| Wind rating (ASTM D3161) | 110-130 mph | 130-150 mph | Class 4 Impact Resistant |
| Available colors | Full palette | Full palette | Tie |
| GAF models carrying rating | Timberline HDZ (limited) | Timberline AS II, Armorshield | Class 4 Impact Resistant |
| Owens Corning models | Duration | Duration STORM | Class 4 Impact Resistant |
| Break-even hold time (vs Class 3) | Not applicable | 7-10 years | Class 4 Impact Resistant |
What is the UL 2218 test for impact-resistant shingles?
UL 2218 drops steel balls of varying sizes from 20 feet onto a shingle sample. Class 1 uses a 1.25-inch ball; Class 2 uses 1.5-inch; Class 3 uses 1.75-inch; Class 4 uses 2-inch. The shingle passes if the mat does not crack, tear, or fracture after two impacts at the same location per ASTM procedure.
Does Texas law require insurance carriers to discount Class 4?
Yes. Texas Insurance Code Chapter 2210 requires carriers to offer actuarially justified discounts for impact-resistant roofing. Most carriers discount Class 4 between 10% and 35% on the windstorm portion of the policy. Carriers calculate the exact discount based on ZIP code hail frequency, roof age, and the specific manufacturer UL 2218 certificate.
How much more does Class 4 cost than Class 3?
Class 4 shingles cost approximately $0.50 to $1.00 per square foot more than Class 3 installed in DFW. On a typical 2,500 sqft home, the Class 4 premium is $1,250 to $2,500. Insurance discount savings of 10-35% on the windstorm premium typically pay back the upfront Class 4 premium within 7 to 10 years.
Which shingle brands sell Class 4 in DFW?
GAF Timberline AS II, GAF Grand Sequoia AS, Owens Corning Duration STORM, CertainTeed NorthGate, Malarkey Vista, and IKO Nordic are the Class 4 shingles commonly stocked in the DFW market in 2026. All six lines are GAF, Owens Corning, or CertainTeed certified through major DFW distributors with 48-hour lead times.
Does Class 4 last longer than Class 3?
Yes, Class 4 shingles typically last 5 years longer than Class 3 in DFW hail corridors. Class 4 uses reinforced SBS-modified asphalt or polymer-modified mats that resist granule loss and cracking. Documented DFW claim data shows Class 4 roofs averaging 25-30 year replacement cycles versus 20-25 years for Class 3 installations.
Can I request Class 4 on an insurance claim replacement?
Sometimes. Texas insurance carriers replace like-kind-and-quality, meaning a Class 3 roof is replaced with Class 3. Upgrading to Class 4 usually requires the homeowner paying the incremental material cost out of pocket. The upgrade pays back within 7-10 years through the Class 4 windstorm discount on the renewed policy.
Does JRH Construction install Class 4 shingles?
Yes. JRH Construction installs GAF Timberline AS II, Owens Corning Duration STORM, and CertainTeed NorthGate Class 4 shingles across DFW. JRH is GAF Master Elite and Owens Corning Platinum Preferred, which unlocks extended 50-year warranties on qualifying Class 4 installations and handles the insurance discount paperwork end-to-end.
Facts about Class 3 vs Class 4 shingles
- UL 2218 is the Underwriters Laboratories impact rating standard
- Class 4 ball is 2 inches; Class 3 ball is 1.75 inches
- Drop height is 20 feet for all UL 2218 classes
- Texas Insurance Code Chapter 2210 governs IR discount requirements
- Most Texas carriers discount Class 4 between 10% and 35%
- GAF Master Elite installation unlocks extended 50-year warranties
- Common Class 4 models include Timberline AS II and Duration STORM
- Break-even on Class 4 premium typically lands at 7-10 years
Frequently Asked Questions
Are Class 4 shingles hail-proof?
No. Class 4 shingles survive UL 2218 testing but are not indestructible. Hail larger than 2 inches still causes damage. Class 4 dramatically reduces granule loss and mat cracking from the most common 1-2 inch DFW hail events. Damage from 3-inch or larger hail still qualifies for insurance claims on Class 4 roofs.
Do Class 4 shingles void in extreme cold?
No. SBS-modified Class 4 shingles maintain flexibility and impact performance below 20 degrees Fahrenheit, outperforming standard Class 3 shingles in winter hail events. DFW winter storms occasionally produce hail alongside freeze conditions; SBS-reinforced Class 4 models are specifically designed to maintain impact resistance across this temperature range.
How do I prove Class 4 rating to my insurance carrier?
Provide the manufacturer UL 2218 Class 4 certificate and a copy of the installed shingle wrapper showing the product name and UL mark. Most Texas carriers accept photos of the wrapper plus the contractor installation certificate. JRH Construction packages this documentation automatically on every Class 4 installation for insurance discount submission.
Can I mix Class 3 and Class 4 on the same roof?
No, not for insurance discount purposes. Insurance carriers require the entire roof to be Class 4 to apply the discount. Mixing classes also creates aesthetic mismatches because Class 4 shingles typically have slightly different texture and granule profiles than standard Class 3. Always specify a single class across the entire roof system.
Which Class 4 shingle is best for DFW?
GAF Timberline AS II and Owens Corning Duration STORM lead the DFW Class 4 market in 2026. Both carry 50-year limited warranties when installed by Master Elite or Platinum Preferred contractors. Both handle DFW heat, UV, and hail cycles well. Selection often comes down to color availability and HOA aesthetic approval.
Is Class 4 worth it if I am selling in 5 years?
Maybe. The upfront Class 4 premium of $1,250-$2,500 typically does not fully recoup in 5 years through insurance discount alone. However, Class 4 improves marketability and appraisal on DFW homes located in documented hail corridors. Buyers in hail-prone areas often specifically request Class 4 as a condition of purchase.
Need help deciding?
JRH Construction is GAF Master Elite, Owens Corning Platinum Preferred, BBB A+ accredited, SAM.gov registered, and carries $10 million bonding capacity. Founded 2019 by Joel Hasin, 600+ DFW projects completed.
Call (469) 888-6903