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  • Kaden Ray

GAF Timberline HDZ shingles the best shingles on the market.

If you've been looking for a new roof, more than likely you've taken some time to look at the many different types of shingles. You have also probably been overwhelmed by all the different brands and shingle options you can choose from. Let's take a look at some of the most popular GAF options for your roof.

GAF Timberline HDZ Shingle

GAF HDZ Color Chart
GAF HDZ Color Chart

GAF Timberline HDZ Shingles are the most popular shingles on the market today. Since January 2020, these shingles have dominated and become the best-selling shingle by GAF of all time. Let's take a look at the HDZ shingle.

Features of GAF Timberline HDZ Shingle

The GAF Timberline HDZ® Shingles provide homeowners with several unique benefits, including the industry's first wind damage warranty, algae resistance to prevent discoloration, and layer lock technology for enhanced wind resistance. These innovative features offer key protections and advantages for your roof.

Layer Lock
GAF Timberline HDZ Layer Lock Technology

Layer Lock Technology is a new feature introduced by GAF to make shingle installation easier and to enhance their durability against common roofing problems. This technology boasts several benefits, including a larger strike zone for nails, making it less likely for mistakes to occur during installation. According to testing conducted by the Home Innovations Research Lab, Layer Lock shingles can be installed up to 30% faster, reducing labor costs. Additionally, Layer Lock creates a dual-phase seal between shingles using Dura Grip sealant and the strike zone nailing area. This bond increases the shingles' strength and durability, especially against strong winds.

GAF has so much faith in their Timberline HDZ® Shingles that they offer an industry-leading wind warranty that has no maximum wind speed limit. This warranty applies to four nails per shingle application, which is a significant upgrade from their previous model - the Timberline HD - that had a maximum wind capacity of 130 mph with a six-nail per shingle application.

Furthermore, GAF Timberline HDZ® Shingles come with Stain Guard Plus™ Algae Protection, which releases time-based copper to prevent blue-green algae discoloration. This innovative technology replaces traditional algae-resistant copper coatings that can wear down over time. GAF offers a 25-year limited warranty against blue-green algae discoloration, providing additional peace of mind to homeowners.

Pros & Cons Of GAF Timberline HDZ® Shingles


  • Comes with a wind warranty

  • Easy to Install

  • 25-year stain guard algae protection

  • Transferable warranty


GAF Timberline HDZ® Shingles are the first to offer this kind of coverage. Most wind warranties max out at a certain speed, but GAF Timberline HDZ® Shingles does not require that certain prerequisite. Evidence supports that roofs with these shingles installed will not lose any shingles in a hurricane.


The new Layer Lock technology from GAF makes GAF Timberline HDZ® Shingles easier to install for contractors. The improved strike zone and shingle adhesion minimize installation errors, resulting in a roof that withstands extreme weather and requires fewer repairs.


This is an innovative feature of GAF Timberline HDZ® Shingles. With their newly engineered shingles, they created a shingle that releases copper steadily over time. Most shingles with algae protection simply have a copper coating, which will wear down and become less effective over time. But with the constant release of copper, GAF can offer a 25-year warranty against blue-green algae growth.


There is pretty much no other company that offers a warranty transfer if you sell your home. This is especially great if you're a homeowner because if you do choose to move and sell your home, you add a tremendous amount of value by your ability to offer the buyer access to the roof's warranty. There are some stipulations around how exactly this is done, so be sure to verify these steps with GAF if you plan on selling your home and you have this warranty.


We have yet to find any cons to using GAF HDZ Shingles

Final Review

After thoroughly evaluating and testing GAF Timberline HDZ® Shingles in the field. We can confidently say that they are an excellent option for those seeking high-quality roofing materials with advanced features that other shingles lack. With the GAF Timberline HDZ® Shingles, your roof will be well protected and able to withstand harsh weather conditions, provided it is installed correctly. The warranty can be somewhat challenging to navigate, but it is not usually necessary, as these shingles are incredibly durable when compared to other brands, including those offered by GAF. If you prefer the appearance of an architectural shingle roof and want a long-lasting solution, then GAF Timberline HDZ® Shingles are an excellent choice. Give us at Birmingham Roofs a call so we can look at your next project.


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