What Is GAF Timberline UHDZ®?
Timberline UHDZ® (Ultra High Definition) is the premium laminate shingle from GAF. It is designed for homeowners and homeowners associations who want more thickness, more depth, and more protection than Timberline HDZ®.
An UltraMat™ fiberglass core gives it a UL 2218 Class 4 impact rating, the highest possible, which matters when hail hits your roof. The Dual Shadow Line adds a second band of depth to each shingle, and the shingle runs about 20 percent thicker than Timberline HDZ®.
ProShield Roofing is GAF Master Elite certified, so qualifying installations can carry GAF Golden Pledge workmanship coverage. See how it fits into our residential roofing services, or compare it with Timberline HDZ®.
Quick Specs
| Lifespan | Most roofs last 25 to 30 years or longer |
| Installed Cost | Typically about 10% more than Timberline HDZ® |
| Wind Rating | ASTM D3161 Class F and ASTM D7158 Class H |
| Impact Resistance | UL 2218 Class 4 |
Timberline UHDZ® Shingles Options
Timberline UHDZ® comes in one color collection of six colors. The blends are built around the Dual Shadow Line, so each one reads with extra depth from the street. Ask us which colors are available for your project, or read our guide to the types of roof shingles.
Features & Benefits
Timberline UHDZ® is built around a thicker shingle, a richer appearance, and stronger coverage.
High-Quality Laminated Shingle
Designed for homeowners and homeowners associations in need of a shingle that surpasses the weight of Timberline HDZ® Shingles.
Dual Shadow Detailing and Beautiful Color Fusion
Exclusive granule technology and distinctive color blends ensure your roof looks exceptional from every angle and at any time of day.
UltraMat™ Impact Resistance
A high-performance fiberglass mat reinforces the shingle at its core, helping it pass the UL 2218 Class 4 impact test.
Powerful Warranty Guarantees
Provides a 30-year StainGuard Plus PRO™ limited warranty against blue-green algae discoloration and is eligible for the WindProven™ Limited Wind Warranty when paired with the required four qualifying GAF accessories.
Warranties & Technologies
Here is what supports the wind, algae, and installation performance of Timberline UHDZ®.
StainGuard Plus PRO™ Algae Protection Limited Warranty
With a 30-year StainGuard Plus PRO™ Limited Warranty against blue-green algae discoloration, Timberline UHDZ® Shingles also offer 10% more GAF time-release algae-fighting technology than StainGuard Plus™ shingles.
WindProven™ Limited Wind Warranty
GAF shingles with LayerLock® Technology, combined with the installation of four qualifying GAF accessories, qualify for the 15-year WindProven™ Limited Wind Warranty, which provides coverage without a wind speed restriction.
LayerLock® Technology
Thanks to the StrikeZone™ nailing area, roofers can achieve up to 99.9% accuracy in nail placement. In GAF’s test, a roofer placed 999 out of 1,000 nails correctly.
Dura Grip™ Adhesive
With Dura Grip™ Adhesive, your roof gains added defense against wind and wind-driven rain. When combined with LayerLock® Technology and four specific GAF accessories, it strengthens the WindProven™ Limited Wind Warranty.
Warranty and Lifespan
Timberline UHDZ® qualifies for GAF’s longest algae and workmanship terms in the Timberline line.
Manufacturer Warranty
Timberline UHDZ® carries GAF’s Lifetime Limited Warranty against manufacturing defects for the original owner of a single-family home. A 30-year StainGuard Plus PRO™ warranty covers blue-green algae discoloration on labeled packages. The 15-year WindProven™ warranty covers qualifying systems with no maximum wind speed. See the GAF warranty guide for full terms.
ProShield Workmanship Warranty
As a GAF Master Elite contractor, ProShield Roofing can register the GAF Golden Pledge Limited Warranty on qualifying systems with five GAF accessories. On Timberline UHDZ®, it provides 50 years of non-prorated coverage on defective materials. It also adds 30 years of workmanship coverage on single-family homes owned by individuals. Read a sample Golden Pledge warranty, and ask us which installations qualify.
What “Lifespan” Actually Means
“Lifetime” describes how long warranty coverage runs, not how long a roof will last. A thicker shingle helps, but service life still depends on ventilation, installation quality, and storm exposure. Learn more about how long a roof lasts and why proper ventilation matters.
Pros and Cons
Pros
Class 4 Impact Rating
Labeled packages carry the highest UL 2218 rating and may qualify for insurance discounts.
Deeper Shadow Lines
The Dual Shadow Line gives the roof more dimension than a standard laminate shingle.
Longer Algae Warranty
The 30-year term runs five years longer than Timberline HDZ® coverage.
Stronger Workmanship Coverage
Golden Pledge coverage reaches 30 years on qualifying single-family homes.
Cons
Higher Price
It typically costs about 10% more than Timberline HDZ®.
Fewer Colors
Six colors, compared with the wider Timberline HDZ® lineup.
Not a Hail Warranty
Class 4 is a test rating, so check how your policy treats hail and review our storm damage repair options.
Traditional Profile
Designer shingles such as GAF Woodland® offer a more custom shape.
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Technical Specifications
| Pieces/Square | 64 |
| Bundles/Square | 3 |
| Nails/Square | 256 |
| Exposure | 5 5/8″ |
| Dimensions | 13 1/4″ x 39 3/8″ |
| Fire Rating | UL Class A (ANSI/UL 790) |
All dimensions are nominal. Specifications and warranty details come from GAF’s Timberline UHDZ® product page and residential warranty guide.
WHAT YOU NEED TO KNOW
Timberline UHDZ® Questions
It stands for Ultra High Definition, GAF’s name for the premium laminate shingle in the Timberline line.
UltraMat™ is a high-performance fiberglass mat at the core of the shingle. It helps Timberline UHDZ® achieve a UL 2218 Class 4 rating.
It is a patented design that distributes color granules to create two parallel shadow lines, which adds depth to the roof.
It depends on your budget and priorities. You get Class 4 impact resistance, a longer algae warranty, and a thicker shingle for a modest increase in price. GAF has a side-by-side comparison of both shingles.
It may. Class 4 shingles can qualify for insurance discounts, but the savings depend on your provider and policy. Our guide to roof insurance claims explains how coverage works.
Six colors: Pewter Gray, Weathered Wood, Shakewood, Barkwood, Charcoal, and Slate.