America’s best-selling shingle, installed the right way
Timberline HDZ is GAF’s #1-selling shingle, and it’s the roof we install most on Miami Valley homes. It pairs the deep, dimensional look of a high-definition architectural shingle with three technologies that make the whole roof tougher: LayerLock™, StainGuard Plus™ and WindProven™ coverage.
Thrush & Son has roofed Dayton-area homes since 1960. We install HDZ as a complete GAF system, from the starter strip to the ridge cap, so every warranty it qualifies for actually applies. For most homes, it hits the sweet spot between price, curb appeal and protection, which is why it’s the shingle we recommend first.
- 99.9%nailing accuracy with the StrikeZone™ area
- Class Afire rating (UL 790)
- Class 3impact rating (UL 2218)
- 25-yearStainGuard Plus™ algae warranty
- No maxwind speed with WindProven™
Four reasons Timberline outperforms an ordinary shingle
Each one is a GAF technology you can see on the roof or read in the warranty.
Plenty of shingles look good on day one. What separates this one is how it’s built and how it’s backed: a stronger nailing area, algae protection that lasts, and wind coverage you can actually read in writing.
LayerLock™ technology
A mechanical fusion between the shingle layers creates the StrikeZone™ nailing area, the widest GAF has ever made. GAF rates it at up to 99.9% nailing accuracy, which means fewer misplaced nails and a stronger hold.
More on LayerLock
WindProven™ limited wind warranty
Install HDZ with GAF starter strips, roof deck protection, ridge cap shingles, and leak barrier or attic ventilation, and the roof qualifies for a 15-year WindProven limited wind warranty with no maximum wind speed.
See our warranties
StainGuard Plus™ algae protection
Those black streaks on Ohio roofs are algae. StainGuard Plus granules fight it over time, backed by a 25-year limited warranty against blue-green algae discoloration.
More on StainGuard
A complete GAF roofing system
Shingles are only the top layer. We pair HDZ with matching GAF underlayment, leak barrier, starter strips, ridge caps and ventilation, so the whole roof works together.
Our roofing servicesTimberline HDZ up close
A quick look at how the shingle is built and why roofers like installing it. If you’re comparing bids, this is a good way to see what you’re actually paying for before anyone climbs a ladder.
- How the LayerLock layers bond together
- Where the wide StrikeZone nailing area sits
- What the finished high-definition look is like
The Timberline HDZ spec sheet
The details that matter when you compare shingles side by side.
Timberline® HDZ™ specifications
| Shingle type | Architectural, high-definition laminated |
|---|---|
| Fire rating | Class A, UL 790 |
| Impact rating | Class 3, UL 2218 |
| Nailing area | StrikeZone™, up to 99.9% nailing accuracy |
| Algae protection | StainGuard Plus™, 25-year limited warranty |
| Wind coverage | 15-year WindProven™ limited wind warranty, no maximum wind speed (qualifying accessories required) |
| Manufacturing warranty | Lifetime limited warranty against manufacturing defects |
| Color collections | High Definition® and Bold Definition |
Source: GAF’s HDZ product page. See GAF’s warranties for complete coverage, terms and restrictions.
New Bold Definition colors
Alongside the classic High Definition palette, GAF added four Bold Definition colors with richer contrast:
- Chestnut Valley
- Cliffside
- Midnight Mesa
- Sierra Sand
Swatch tones are approximate. We’ll bring real samples so you can see them against your siding and brick.
Try colors in our design centerIs Timberline HDZ right for your roof?
Most homes land on HDZ. Here’s when another GAF shingle makes more sense.
There’s no single best shingle for every house. The right pick depends on how much hail your neighborhood sees, how much of the roof shows from the street and how long you plan to stay. We’ll talk through all three at your estimate.
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Best all-around value
Timberline HDZ
Our most-installed roof. High-definition look, LayerLock, StainGuard Plus and WindProven eligibility.
You are here -
For hail-prone homes
Timberline AS II
The same look with ArmorShield™ II impact resistance for homes that take a beating from hail.
Compare AS II -
For a signature look
Designer shingles
Thicker, more sculpted shingles like Camelot® II, Slateline® and Glenwood® for homes that want a statement roof.
See designer options
Thinking about stepping up? GAF explains the differences in UHDZ vs. HDZ.
Questions homeowners ask about HDZ shingles
Straight answers from the crew that installs it.
What is Timberline HDZ?
It's an architectural shingle from GAF and the company's best-selling shingle. It combines a high-definition, dimensional look with LayerLock technology, StainGuard Plus algae protection and eligibility for GAF's WindProven limited wind warranty.
What does LayerLock technology do?
LayerLock mechanically bonds the shingle layers together and creates the StrikeZone nailing area. GAF rates it at up to 99.9% nailing accuracy, which helps every shingle hold the way it's designed to.
What is the WindProven warranty?
It's a 15-year GAF limited wind warranty with no maximum wind speed. To qualify, the shingles must be installed with GAF starter strips, roof deck protection, ridge cap shingles, and leak barrier or attic ventilation.
Will HDZ stop black streaks on my roof?
Those streaks are usually algae. StainGuard Plus granules are designed to resist it, and GAF backs them with a 25-year limited warranty against blue-green algae discoloration.
What colors does HDZ come in?
It comes in GAF's High Definition colors plus the newer Bold Definition collection, which includes Chestnut Valley, Cliffside, Midnight Mesa and Sierra Sand. We bring real samples to your estimate.
Is HDZ good for hail?
It carries a Class 3 impact rating. If your home sees frequent hail, ask us about AS II, which is designed for higher impact resistance.
