By: David Cohen, Owner of Green Collar Roofing & Exteriors

As a homeowner, one of the most important decisions you’ll make is choosing the right roofing material to protect your home. With so many options available, it can be overwhelming to navigate through the world of asphalt shingles. Today, I’m going to share my insights on three popular shingle options: GAF Timberline HDZ, Owens Corning TruDefinition Duration Shingles, and IKO Dynasty shingles.

Each of these shingles boasts unique features that can benefit homeowners in different ways. Let’s dive in and explore the key differences between these asphalt shingles, so you can make an informed decision for your home.


When it comes to reliability and performance, GAF Timberline HDZ shingles have a reputation for being one of the best. As a roofer, I’ve seen these shingles withstand the test of time in various climates and conditions. Here’s what sets the Timberline HDZ shingles apart:

Advanced LayerLock™ Technology: This innovative technology allows for an industry-leading nail zone, making it easier to accurately place nails and ensure a secure installation. This larger nailing area also reduces the risk of nail pull-through and blow-offs in high winds.

Dual Shadow Lines: GAF Timberline HDZ shingles feature enhanced aesthetics, thanks to their dual shadow lines. This design element creates a high-definition appearance, adding depth and dimension to your roof.

Lifetime Limited Warranty: GAF offers a Lifetime Limited Warranty for Timberline HDZ shingles, giving homeowners peace of mind for the long haul.


Owens Corning is another trusted name in the roofing industry, and their TruDefinition Duration Shingles are known for their durability and attractive appearance. Here’s what you can expect from these shingles:

Surenail Technology image

Patented SureNail® Technology: Owens Corning’s patented SureNail Technology features a reinforced nail zone, which provides a triple layer of reinforcement. This unique design helps prevent nail blow-through and improves the shingle’s resistance to wind uplift.

TruDefinition® Color Platform: These shingles come in a wide variety of vibrant, high-contrast colors that can enhance your home’s curb appeal. The TruDefinition Color Platform ensures consistent color, providing a visually appealing and cohesive look for your roof.

Limited Lifetime Warranty: Like GAF, Owens Corning offers a Limited Lifetime Warranty for their TruDefinition Duration Shingles, which helps protect your investment.


IKO Dynasty shingles are designed with both performance and aesthetics in mind. With advanced technology and a variety of color options, these shingles can give your home a stunning, long-lasting roof. Let’s take a closer look at the ArmourZone® Technology: IKO’s ArmourZone Technology features a reinforced nail zone, providing exceptional fastening strength and resistance to wind uplift. This technology also helps prevent nail pull-through, ensuring a secure installation.  features of IKO Dynasty shingles:

IKO Logo Asphalt Shingles Showdown IKO

High-Definition Color Blends: IKO Dynasty shingles are available in a range of high-definition color blends, allowing you to customize the look of your roof to complement your home’s style.

Aesthetics: The Dynasty shingles offer the largest exposure resulting in a dramatic eye-catching reveal that homeowners love.

Limited Lifetime Warranty: IKO also offers a Limited Lifetime Warranty for their Dynasty shingles, providing homeowners with additional peace of mind.

So, which shingle is right for you?

Each of these asphalt shingle options has its own unique advantages. GAF Timberline HDZ shingles are known for their reliable performance, while Owens Corning TruDefinition Duration Shingles and IKO Dynasty shingles boast reinforced nail zones for added durability. When making your decision, consider the following factors:

Climate: Think about the weather conditions in your area. If your region experiences high winds or extreme temperatures, a shingle with a reinforced nail zone, like Owens Corning Duration or IKO Dynasty, might be a better choice.

Aesthetics: Consider the appearance of the shingle and how it will look on your home. GAF Timberline HDZ shingles offer dual shadow lines for added dimension, while Owens Corning Duration and IKO Dynasty shingles come in a variety of high-definition colors. However if you are looking for a dramatic appearance the IKO Dynasty shingle offers a stately presentation with its larger profile reveal of nearly 6 inches.

Performance: It’s important to note that the IKO Dynasty AR Performance shingle with “ArmorZone” is the Industry leader in nail pull-through resistance, shingle blow-off resistance and delamination resistance testing.  It is 5x stronger than GAF Timberline HDZ and 50% stronger than Owens Corning TruDefinition Duration Shingles as confirmed by independent testing facilities. It is also the only shingle out of the group with an industry leading Class 3 rating that can withstand golf ball size hail impacts.

Warranty: All three shingle options offer Limited Lifetime Warranties, but it’s essential to read the fine print and understand the terms and conditions. Speak with your roofing contractor to ensure you’re aware of any limitations or exclusions that may apply.

Budget: Asphalt shingles can vary in price, so it’s important to factor in your budget when making a decision. Keep in mind that while a more affordable shingle may be tempting, investing in a higher-quality product can save you money in the long run due to increased durability and lower maintenance costs.

Installation: Proper installation is crucial for the longevity and performance of your roof. When choosing a shingle, make sure you work with a reputable roofing contractor who has experience installing the specific shingle type you select.

In conclusion, GAF Timberline HDZ, Owens Corning TruDefinition Duration Shingles, and IKO Dynasty shingles all have their unique advantages that can cater to different homeowner needs. By considering your local climate, performance, desired aesthetics, warranty, budget, and proper installation, you can make an informed decision and choose the best asphalt shingle option for your home.

As the owner of Green Collar Roofing & Exteriors, I’m committed to helping homeowners navigate the world of roofing materials and make the best choice for their needs. If you have any questions or would like assistance in selecting the right shingle for your home, please don’t hesitate to reach out to our team. We’re here to help! 

You can reach us at 845-344-2029 or visit our showroom located at 259 Dunning Rd, Middletown, NY 10940.