GAF and Owens Corning are the two biggest shingle brands in the US. Both are excellent — but they're not identical. Here's an honest comparison to help you choose the right product for your Somerset County home.
Why This Choice Matters
GAF and Owens Corning together account for roughly 80% of all asphalt shingles installed in the United States. If you're getting a new roof in Somerset County, NJ, there's a very good chance your contractor will recommend one of these two brands. Both are excellent products — but there are real differences in warranty terms, wind resistance, aesthetics, and price that are worth understanding before you sign a contract.
Brand Overview
| Feature | GAF | Owens Corning |
|---|---|---|
| Market Share (US) | #1 (~40%) | #2 (~35%) |
| Flagship Product | Timberline HDZ | Duration Series |
| Warranty (System Plus) | 50-year non-prorated | 50-year non-prorated |
| Wind Warranty | 130 mph (HDZ) | 130 mph (Duration) |
| Algae Resistance | StainGuard Plus (25 yr) | StreakGuard (10 yr) |
| Impact Rating | Class 4 (optional) | Class 4 (optional) |
| Color Options | 50+ colors | 60+ colors |
GAF Timberline HDZ: The Details
The Timberline HDZ is GAF's best-selling product and the most-installed shingle in North America. The "LayerLock" technology bonds the shingles together after installation, creating a unified surface that dramatically improves wind resistance without relying solely on nails. StainGuard Plus algae protection lasts 25 years — important in shaded Somerset County yards.
Owens Corning Duration Series: The Details
The Duration Series uses "SureNail Technology" — a reinforced nailing zone that provides a wider target for nail placement and a woven fabric strip that grips nails more securely. Duration Storm (Class 4 impact-resistant version) is one of the best hail-resistant shingles available — ideal for NJ's storm season.
Which One Is Right for Your NJ Home?
Choose GAF Timberline HDZ if:
- Algae and moss are a concern (shaded yard, north-facing slopes)
- You want the LayerLock wind performance advantage in NJ storms
- You want the most widely available product with the deepest contractor network
Choose Owens Corning Duration if:
- You want a wider color selection for curb appeal
- You're in a hail-prone area and want the Duration Storm (Class 4) version
- Your contractor has a strong track record with OC products
What About Price?
In Somerset County NJ, the installed cost difference between GAF Timberline HDZ and Owens Corning Duration is typically $200–$600 for a full roof replacement — not a significant factor in most decisions. Both products represent excellent long-term value compared to budget shingles.
Our Recommendation
At Restorhive, we install both GAF and Owens Corning products and are certified contractors for both brands. Our honest recommendation: either product will serve you well for 30+ years in NJ. The more important factors are proper installation, correct ventilation, and quality underlayment — which matter more than the brand name on the shingle. Call us at (908) 279-0901 and we'll walk you through both options with actual samples.
