Choosing the right roofing shingle is one of the biggest decisions homeowners make during a roof replacement.
And if you start researching online, you quickly realize there is a lot of marketing, a lot of contractor bias, and not a lot of straightforward comparisons.
The three most common architectural shingles homeowners compare in Colorado are:
All three are major national brands.
All three can perform well when installed correctly.
But they are not identical products.
At Excel Roofing, we work with all major roofing systems throughout Colorado. This guide breaks down the real-world differences between these shingles, especially for Colorado’s hail, wind, UV exposure, and freeze-thaw conditions.
| Category | Owens Corning Duration STORM | GAF Timberline HDZ | CertainTeed Landmark |
|---|---|---|---|
| Overall Performance | 9.5/10 | 7/10 | 8.8/10 |
| Wind Resistance | 9.5/10 | 8.5/10 | 8.5/10 |
| Impact Resistance | 9.5/10 | 8/10 | 9/10 |
| Warranty System | 10/10 | 8/10 | 8.5/10 |
| Visual Appearance | 8.8/10 | 8/10 | 9.5/10 |
| Installation Consistency | 9.5/10 | 8.5/10 | 8/10 |
| Contractor Preference | 9.5/10 | 7.5/10 | 8.5/10 |
| Long-Term Durability | 9/10 | 8/10 | 9/10 |
| Value for Cost | 9.5/10 | 8.5/10 | 8/10 |
Owens Corning Duration STORM is one of the strongest overall roofing systems for Colorado homeowners, especially in hail-prone areas.
The biggest advantage is the combination of:
The SureNail strip is one of the best installation features in the roofing industry.
It helps:
This matters significantly because many roof failures are caused by poor installation, not the shingle itself.
Owens Corning Duration STORM performs extremely well in high-wind environments.
Colorado’s Front Range regularly experiences:
The reinforced nailing strip helps the shingles resist blow-offs better than many competing products.
Duration STORM is specifically designed for hail-prone markets like Colorado.
The SBS modified asphalt construction improves:
This is one of the strongest impact-resistant shingles currently available in the residential market.
Owens Corning has one of the stronger manufacturer ecosystems when installed through certified contractors.
The warranty structure is competitive with GAF while offering a stronger overall shingle product in many contractors’ opinions.
The biggest downside is cost.
Duration STORM is typically more expensive than standard architectural shingles.
However, many homeowners feel the performance upgrade is worth the investment in Colorado.
GAF Timberline is the largest-selling roofing shingle in America.
It is a very safe, mainstream roofing option with massive brand recognition.
GAF products are widely available nearly everywhere.
GAF has one of the largest contractor certification systems in the country.
The Timberline HDZ line improved significantly over older GAF generations.
The expanded nail zone made installation more forgiving and improved wind resistance.
The HDZ line performs much better than older GAF systems.
However, most contractors still view Owens Corning’s SureNail strip as the stronger overall wind-performance system.
Standard Timberline HDZ is not a Class 4 impact-resistant shingle.
GAF does offer impact-resistant options like ArmorShield II, but the standard Timberline line is more of a standard architectural shingle system.
GAF’s warranty ecosystem is one of its biggest strengths.
The company heavily invests in:
Homeowners often recognize GAF more than any other roofing brand.
The biggest criticism many contractors have is quality consistency.
Depending on the manufacturing plant, some roofers feel:
That does not mean GAF is bad.
It simply means many contractors feel Owens Corning and CertainTeed have more premium product consistency.
CertainTeed Landmark is widely viewed as one of the most premium-looking architectural shingles on the market.
It has a heavier, thicker appearance than many competitors.
This is where CertainTeed often wins.
Landmark shingles tend to have:
A lot of contractors believe CertainTeed produces the best-looking architectural shingles overall.
CertainTeed shingles are known for:
Landmark ClimateFlex also performs well in hail-prone environments.
Wind performance is strong overall, though most contractors still prefer the Owens Corning SureNail system from an installation and wind-resistance standpoint.
CertainTeed warranties are solid, though their contractor certification ecosystem is generally viewed as slightly less aggressive and consumer-facing than GAF.
The main downsides are:
CertainTeed is often viewed as more of a premium aesthetic product than a value-driven product.
Colorado changes the equation dramatically because of:
In Colorado, impact resistance and installation quality matter more than almost anything else.
Owens Corning Duration STORM wins overall because it balances:
The SureNail strip is a major advantage, especially in Colorado’s wind conditions.
If curb appeal and dimensional appearance are the highest priority, CertainTeed Landmark is one of the best-looking shingles available.
GAF Timberline remains a strong mainstream roofing option with:
The installer matters more than the brand.
A poorly installed premium roof will fail faster than a properly installed mid-tier roof.
Most roof failures come from:
The quality of the roofing contractor matters just as much as the shingle itself.