If you’re replacing a roof in Colorado, the most important decision you’ll make is whether to install Class 4 impact-resistant shingles. This post gives you the straight financial math — insurance discounts, lifespan, and true cost — so you can make the right call for your home.
What Is a Class 4 Shingle?
The UL 2218 impact resistance rating system classifies roofing products from Class 1 (lowest) to Class 4 (highest). Class 4 products survive a 2-inch steel ball dropped from 20 feet without cracking — simulating golf ball-sized hail at terminal velocity. Standard asphalt shingles are typically Class 1-3 and fail this test.
Popular Class 4 shingles for Colorado include Owens Corning Duration Storm, GAF Timberline ArmorShield II, and Malarkey Windsor. Josh Brooks Construction installs all major Class 4 products.
The Financial Math — Colorado Front Range
| Factor | Standard Shingles | Class 4 Shingles |
|---|---|---|
| Installed Cost | $8,500–$18,000 | $10,000–$22,000 |
| Premium Increase | $0 | +$1,500–$4,000 |
| Insurance Discount | None | 15–25% annually |
| Annual Savings (avg $200/yr) | $0 | $200–$400/yr |
| Breakeven on Upgrade | — | 5–8 years |
| Hail Replacements (25 yrs) | 2–3 replacements | 0–1 replacements |
| True 25-Year Cost | $28,000–$54,000 | $12,000–$28,000 |
Which Insurance Companies Offer Class 4 Discounts in Colorado?
- State Farm — 15-20% discount on wind/hail premium with Class 4 documentation
- Farmers — 15-25% depending on policy type and location
- Allstate — varies by location; requires photo documentation of installation
- USAA — 10-15% for qualifying impact-resistant products
- Liberty Mutual — 20-25% in high-risk hail zones including Front Range
- American Family — up to 20% in Boulder and Weld County
Josh Brooks Construction provides a UL 2218 Class 4 certification letter with every impact-resistant installation — the document your insurance company requires to apply the discount.
Get a Free Class 4 Roofing Estimate
We install Owens Corning Duration Storm, GAF ArmorShield II, and Malarkey Windsor. Written estimate with insurance discount paperwork included.