Manufacturing-defect warranty
Covers the shingle itself against defects in how it was manufactured. It does not cover installation mistakes, storm events or wear caused by something other than the product.
Roofing materials
Which Roofing Shingle Is Right for Your Home?
GAF, CertainTeed, and Owens Corning all produce architectural asphalt shingles designed for residential roofing — but their installation technologies, warranty structures, colors, and roofing-system requirements differ. Here’s what homeowners should actually compare before choosing.
Start with the basics
What Is an Architectural Asphalt Shingle?
An architectural shingle — also called a laminated or dimensional shingle — is built from bonded layers rather than the single flat sheet used in a traditional three-tab shingle. That extra layering is what gives the finished roof depth, shadow lines and a more substantial appearance from the street.
At a high level, all three products on this page are asphalt-coated fiberglass shingles finished with mineral granules. That does not mean they are made the same way: construction details, layer count, adhesives, nailing zones and reinforcement differ from manufacturer to manufacturer, and those differences are where the comparison below actually matters.
How a shingle is built up
Fiberglass base mat
A fiberglass mat forms the core of the shingle and gives it its shape and stability.
Asphalt layers
Asphalt coats the mat. On an architectural shingle, bonded layers create the thickness that produces its dimensional profile.
Protective granules
Mineral granules are embedded in the surface. They provide the color you see and shield the asphalt beneath from sunlight.
Dimensional laminated profile
The laminated construction creates varied tab shapes and shadow lines, which is why an architectural roof reads as textured rather than flat.
Side by side
GAF vs. CertainTeed vs. Owens Corning
Only currently verified manufacturer information is shown, in each manufacturer’s own terminology. Warranty and product terms change — these entries were last verified on August 14, 2026.
| Comparison | GAFTimberline HDZ | CertainTeedLandmark | Owens CorningTruDefinition Duration |
|---|---|---|---|
| Product type | Architectural asphalt shingle. | Dual-layer architectural asphalt shingle. | Architectural asphalt shingle. |
| Architectural / laminated construction | Multi-layer asphalt-coated fiberglass architectural shingle. | Fiberglass-based architectural shingle with asphalt / mineral-granule construction. | Laminated architectural asphalt shingle with a fabric-reinforced nailing area. |
| Impact-resistance classification | UL 2218 Class 3 impact resistance on qualifying product packages. | UL 2218 Class 3 impact resistance. | UL 2218 Class 3 impact resistance for the standard Duration product. |
| Standard manufacturing-defect warranty | Lifetime Limited Warranty, subject to GAF warranty terms. | Lifetime limited transferable warranty under CertainTeed terms, with 10-year SureStart protection. | Limited Lifetime Warranty for qualifying single-family homeowners, subject to Owens Corning warranty terms. |
| Algae-resistance coverage | 25-year StainGuard Plus Limited Warranty against blue-green algae discoloration on qualifying products. | 25-year StreakFighter algae-resistance warranty. | 25-year algae-resistance coverage where applicable and subject to current Owens Corning requirements. |
| Wind-warranty structure | Eligible for GAF's 15-year WindProven Limited Wind Warranty with no maximum wind-speed limitation when Timberline shingles with LayerLock technology are installed with the required combination of four qualifying GAF accessories. | 15-year 110-mph wind-resistance warranty, with an upgrade to 160 mph available when the applicable CertainTeed starter and hip/ridge requirements are satisfied. | 130-mph wind-resistance limited warranty, subject to warranty requirements. |
| Nailing / installation technology | LayerLock technology / StrikeZone nailing area. | NailTrak extra-wide nailing area, with QuadraBond layer adhesion and CertaSeal adhesive. | SureNail reinforced nailing zone. |
| Roofing-system accessory requirements | The WindProven wind warranty requires the specified combination of four qualifying GAF accessories installed with the shingle. | The 160-mph wind-warranty upgrade requires the applicable CertainTeed starter and hip/ridge products. | Warranty coverage is subject to Owens Corning's stated installation and roofing-system requirements. |
| Color-selection considerations | Available colors vary by region and supplier availability; physical samples should be viewed before selection. | A broad range of color blends; availability varies regionally and physical samples should be reviewed. | TruDefinition color blends are designed for contrast and depth; availability varies regionally and samples should be reviewed. |
| Major distinguishing feature | LayerLock / StrikeZone nailing area and WindProven wind-warranty eligibility when the full accessory requirements are met. | Dual-layer construction with a detailed published warranty structure, including 10-year SureStart protection. | SureNail — a visible engineered fabric strip in the nailing area creating a reinforced fastening zone. |
Source: each manufacturer’s published product and warranty literature. Verified August 14, 2026. Always review the actual warranty documents for the roofing system being proposed.
Read the fine print
A “Lifetime Warranty” Doesn’t Mean Every Roof Is Covered Forever
Warranty language is where most roofing confusion lives. A single roof can be covered by several different warranties at once, each with its own length, conditions and issuer. Knowing which is which is the difference between an informed decision and a surprise years later.
Algae warranty
A separate, time-limited warranty against algae discoloration on qualifying products. It addresses appearance, not performance, and typically runs for a fixed number of years.
Wind warranty
Covers shingle blow-off up to a stated wind speed or under a stated structure, and almost always depends on correct fastening and specific accessories being installed.
Workmanship warranty
Comes from the contractor, not the manufacturer, and covers how the roof was installed. Its length and terms are set by the roofing company that did the work.
Standard manufacturer warranty
The baseline coverage that comes with the product when it is installed correctly. No special contractor status or accessory package is required.
Enhanced / system warranty
An upgraded level that generally requires a full manufacturer-specified system, sometimes a credentialed contractor, and registration. It is not automatic on any job.
Words That Have Specific Meanings
- Lifetime
- Refers to a defined period tied to ownership of the property by a qualifying homeowner under the manufacturer's terms — not literally forever, and not automatically for every property type.
- Limited
- The coverage has stated conditions, exclusions and remedies. Nearly every roofing warranty on the market is a limited warranty.
- Transferable
- Coverage may pass to a subsequent owner, usually once, within a set window and often with a transfer procedure or fee.
- Non-Prorated
- During a stated early period, coverage is not reduced by the age of the roof. After that period, remaining coverage is typically prorated.
What Eligibility Can Depend On
- Property ownership and property type
- Correct installation to the manufacturer's instructions
- Required accessories being part of the installed system
- Contractor credentials, for certain upgraded warranties
- Registration, where the manufacturer requires it
- Transfer requirements when the home is sold
- The warranty's stated exclusions
Not every manufacturer warranty level is available on every project, and NYC Roof Co only proposes warranty levels for which eligibility has actually been verified. Always review the actual manufacturer warranty documents for the roofing system being proposed.
Product deep dive
GAF Timberline HDZ
Timberline HDZ is GAF's architectural asphalt shingle. Like the other two products on this page, it is a laminated shingle — layers of asphalt-coated fiberglass bonded together and surfaced with mineral granules — so the finished roof has depth and shadow lines instead of the flat look of a three-tab roof.
What distinguishes the installation of this shingle is LayerLock technology and the StrikeZone nailing area, a widened, clearly marked fastening zone intended to make it easier for the installer to place nails where the manufacturer specifies.
- Product type
- Architectural asphalt shingle.
- Impact resistance
- UL 2218 Class 3 impact resistance on qualifying product packages.
- Manufacturing-defect warranty
- Lifetime Limited Warranty, subject to GAF warranty terms.
- Algae coverage
- 25-year StainGuard Plus Limited Warranty against blue-green algae discoloration on qualifying products.
- Wind warranty
- Eligible for GAF's 15-year WindProven Limited Wind Warranty with no maximum wind-speed limitation when Timberline shingles with LayerLock technology are installed with the required combination of four qualifying GAF accessories.
- Nailing technology
- LayerLock technology / StrikeZone nailing area.
Potential Advantages
- A notable wind-warranty structure — the WindProven Limited Wind Warranty carries no maximum wind-speed limitation when its full requirements are met.
- A large, well-established architectural shingle product line.
- LayerLock technology with a wide, clearly marked StrikeZone nailing area.
- UL 2218 Class 3 impact resistance on qualifying product packages.
- A broad color selection, subject to regional availability.
Things to Understand
- The strongest wind-warranty eligibility is not automatic — it requires the specified combination of four qualifying GAF accessories.
- Warranty terms vary depending on the exact roofing system installed, not the shingle alone.
- GAF offers higher-level products above standard Timberline HDZ if a homeowner wants features beyond it.
Product and warranty details above are drawn from GAF published Timberline HDZ product and warranty literature. Verified August 14, 2026.
Product deep dive
CertainTeed Landmark
Landmark is CertainTeed's dual-layer architectural asphalt shingle: a fiberglass-based shingle with asphalt and mineral-granule construction, built with two bonded layers to create its dimensional profile.
Its installation-related features are NailTrak, an extra-wide nailing area, along with QuadraBond layer adhesion and CertaSeal adhesive. Its warranty structure is unusually detailed in published form, including early-life SureStart protection and a separate algae-resistance warranty.
- Product type
- Dual-layer architectural asphalt shingle.
- Impact resistance
- UL 2218 Class 3 impact resistance.
- Manufacturing-defect warranty
- Lifetime limited transferable warranty under CertainTeed terms, with 10-year SureStart protection.
- Algae coverage
- 25-year StreakFighter algae-resistance warranty.
- Wind warranty
- 15-year 110-mph wind-resistance warranty, with an upgrade to 160 mph available when the applicable CertainTeed starter and hip/ridge requirements are satisfied.
- Nailing technology
- NailTrak extra-wide nailing area, with QuadraBond layer adhesion and CertaSeal adhesive.
- Early warranty protection
- 10-year SureStart protection.
Potential Advantages
- A comprehensive, clearly published warranty structure.
- 10-year SureStart early-life protection.
- 25-year StreakFighter algae-resistance coverage.
- An available 160-mph wind-warranty upgrade under the stated system requirements.
- Broad aesthetic and color options.
Things to Understand
- The 160-mph wind warranty is an upgrade with specific system requirements — it is not the standard coverage.
- Landmark, Landmark PRO, ClimateFlex, TL and other CertainTeed shingles are different products and should not be treated interchangeably.
- The warranty level that applies depends on the roofing system actually installed.
Product and warranty details above are drawn from CertainTeed published Landmark product and warranty literature. Verified August 14, 2026.
Product deep dive
Owens Corning TruDefinition Duration
TruDefinition Duration is Owens Corning's architectural asphalt shingle. The TruDefinition name refers to the company's color approach — blends chosen to produce contrast and depth across the roof rather than a single flat tone.
Its defining installation feature is SureNail: a visible engineered fabric strip laid into the nailing area, creating a reinforced fastening zone that the installer can see while nailing.
- Product type
- Architectural asphalt shingle.
- Impact resistance
- UL 2218 Class 3 impact resistance for the standard Duration product.
- Manufacturing-defect warranty
- Limited Lifetime Warranty for qualifying single-family homeowners, subject to Owens Corning warranty terms.
- Algae coverage
- 25-year algae-resistance coverage where applicable and subject to current Owens Corning requirements.
- Wind warranty
- 130-mph wind-resistance limited warranty, subject to warranty requirements.
- Nailing technology
- SureNail reinforced nailing zone.
Potential Advantages
- A reinforced SureNail fastening zone with a visible engineered fabric strip in the nailing area.
- A 130-mph wind-warranty structure.
- A broad Duration family and color selection.
- UL 2218 Class 3 impact resistance on the standard Duration product.
- Visually distinct TruDefinition color blends.
Things to Understand
- Standard Duration should not be confused with Duration FLEX or Duration STORM — those are separate products.
- Some upgraded Duration products have different impact characteristics.
- Warranty terms depend on the roofing system actually installed.
Product and warranty details above are drawn from Owens Corning published TruDefinition Duration product and warranty literature. Verified August 14, 2026.
Learn more
Roofing Material Guides
In-depth, plain-language explanations for homeowners and property owners comparing roofing options in Staten Island.
- ShinglesArchitectural Shingles ExplainedWhat architectural shingles are, how they differ from 3-tab, and which product families you will actually be quoted.
- SystemsAnatomy of a Complete Roofing SystemThe ten components under a finished roof — deck, ice and water protection, underlayment, flashing, ventilation and more.
- ComparisonUnderlayment vs. Ice & Water ShieldTwo lines on the same estimate, two different jobs. Why most roofs use both.
- Flat roofingTPO vs. EPDM vs. Modified BitumenThe three low-slope roofing systems property owners compare, and the conditions that decide between them.
Which one would we choose?
There Isn’t One Right Shingle for Every Home
Ranking these products one, two, three would be dishonest — the right answer depends on what matters most to you and on the roof itself. Start from your priority.
If Wind-Warranty Structure Is a Major Priority
GAF Timberline HDZ is worth a close look. Its WindProven Limited Wind Warranty carries no maximum wind-speed limitation — but only when Timberline shingles with LayerLock technology are installed with the required combination of four qualifying GAF accessories. Without that full system, the standard wind coverage applies instead.
If You Want a Strong Traditional Warranty Structure
CertainTeed Landmark publishes an unusually detailed warranty package: a lifetime limited transferable warranty, 10-year SureStart protection, a 25-year StreakFighter algae-resistance warranty, and a 15-year 110-mph wind warranty that can be upgraded to 160 mph when the applicable starter and hip/ridge requirements are satisfied.
If Installation Fastening Technology Is a Priority
Owens Corning TruDefinition Duration uses SureNail — a visible engineered fabric strip in the nailing area that creates a reinforced fastening zone. For homeowners who care most about how the shingle is secured to the deck, that is a tangible, visible design decision.
If Appearance Is the Deciding Factor
All three provide multiple regional colors and dimensional architectural profiles, and all three will change the look of a home substantially compared with a three-tab roof. Digital photography cannot reproduce shingle color accurately — view physical samples and, where possible, completed roofs in daylight before deciding.
If Price Is the Main Concern
Material pricing varies by color, product availability, supplier, roofing-system components, and the property itself. No fixed tier can be assigned honestly in advance. A roof estimate should compare the complete roofing system being installed — deck work, protection layers, flashing, ventilation and accessories included — rather than the cost of a bundle of shingles.
Beyond the shingle
The Shingle Is Only One Part of the Roof
Choosing between manufacturers is the visible decision. What actually keeps water out of a house is the assembly underneath and around the shingle — and much of it is invisible once the roof is finished.
Roof deck
The wood surface everything is fastened to. If it is soft or damaged, nothing installed above it performs.
Ice & water protection
Self-adhering membrane at eaves, valleys and vulnerable details where water is most likely to back up.
Underlayment
The secondary layer over the deck beneath the shingles.
Starter shingles
The first course, which sets the seal at the edge of the roof and matters directly to wind performance.
Flashing
Metal at walls, chimneys and transitions — the source of a large share of roof leaks.
Valleys
Where two roof planes meet and water volume concentrates.
Ventilation
Intake and exhaust that let the attic breathe, affecting both the roof and the house below it.
Ridge & hip caps
The finishing course along the peaks, often tied to warranty eligibility.
Penetrations
Pipes, vents and anything else passing through the roof surface.
Fastening
Nail placement, count and depth — the difference between a shingle that stays and one that does not.
Installation quality
The workmanship that determines whether every detail above actually performs as designed.
Homeowner feedback
What About Product Reviews?
Homeowner reviews of roofing products can add useful context, but they are hard to compare directly across manufacturers. Review counts differ, collection methods differ, the specific product variant being reviewed is often unclear, and a large share of what a homeowner experiences comes from installation quality rather than the shingle itself.
For that reason this page does not publish a combined score. If verified manufacturer-level or product-level review data is added here in the future, it will be shown per manufacturer, sourced directly, labeled with its source and the date it was retrieved — and it will never be blended into a single NYC Roof Co rating from unequal datasets.
Quick comparison
The Short Version
GAF Timberline HDZ
Worth considering if you value GAF's LayerLock system and WindProven warranty eligibility.
Read the full breakdownCertainTeed Landmark
Worth considering if you value CertainTeed's established Landmark system, SureStart protection and warranty options.
Read the full breakdownOwens Corning Duration
Worth considering if you value Owens Corning's SureNail reinforced fastening technology and Duration color platform.
Read the full breakdown
The final decision should consider the entire roofing assembly, the house itself, available colors, warranty eligibility and current material pricing.
Next step
Compare Them on Your Roof
Start with your property and see the roofing information we can identify before choosing a roofing system.