Timberline HDZ®

Timberline HDZ is the workhorse of the North Texas roofing market — and there's a reason we install more of it in DFW than any other single asphalt product. It's the shingle that made "architectural" the default in American residential roofing, and GAF's current formulation is the most refined version of that recipe to date. At the technical level, HDZ is a laminate architectural shingle: two fiberglass mats bonded together with weathering-grade asphalt and topped with ceramic-coated mineral granules. What makes the modern HDZ different from the 2015-era Timberline HD it replaced is the **LayerLock™ technology** — a wider, machine-precise nailing zone (the "Z" in HDZ) that gives our crews a 99.9%-accurate fastener target. On a windy Texas jobsite that translates to fewer blow-offs and a shingle that qualifies for GAF's WindProven™ Limited Wind Warranty with no wind-speed cap when installed with four required GAF accessories (starter, ridge cap, leak barrier, and roof deck protection). The other engineered advantage is **StainGuard Plus™ time-release algae protection**. GAF embeds copper-microencapsulated granules that slowly release over the roof's life, actively suppressing the blue-green algae (Gloeocapsa magma) that streaks so many older DFW roofs. That's backed by a 25-year StainGuard Plus limited warranty, longer than most competitors' 10-year algae terms. Where HDZ earns its keep is the sweet spot of price, availability, and insurance-friendliness. Every underwriter in the DFW market — State Farm, Allstate, Farmers, USAA, Progressive — recognizes it as a standard-grade architectural shingle for both cash-value and replacement-cost policies. It stocks locally at every distributor we buy from, so a hail loss in April doesn't turn into an August install waiting on backorders.

**Climate performance.** Timberline HDZ handles the DFW climate envelope well: 100°F+ summer surface temps, UV load, and the sudden thermal shock of April supercells. The Class 3 impact rating covers most hail up to 1.5" — which is the majority of North Texas events. For homeowners in the "hail alley" corridor (Denton, Collin, Rockwall, and northern Tarrant counties) who see multiple hailstorms per decade, we usually recommend upgrading to Timberline UHDZ (Class 4) — same shingle family, Class 4 impact, and typically a 15–25% homeowners-insurance premium discount that pays back the upgrade in 3–5 years. **HOA and neighborhood fit.** HDZ's color library covers every DFW HOA-approved palette we've encountered — Pewter Gray, Charcoal, Weathered Wood, and Barkwood are the four we pull most often. Master-planned communities like Southlake, Colleyville, Highland Village, and Frisco's Phillips Creek Ranch have all approved HDZ variants without exception. **Insurance and claims.** Because HDZ is the market standard, adjusters price it accurately. A total-loss claim on an HDZ roof rebuilds like-kind-and-quality without carrier pushback on materials — one of the most underrated benefits of choosing a mainstream shingle in a hail market.

Every Timberline HDZ roof we install is a complete **GAF Lifetime Roofing System**, which is what unlocks the manufacturer's Lifetime warranty and WindProven wind coverage: - **Starter strip:** GAF Pro-Start or StormGuard eave/rake starter - **Underlayment:** Deck-Armor synthetic (or FeltBuster in budget builds) - **Ice & water shield:** WeatherWatch or StormGuard on eaves, valleys, and penetrations - **Ridge & hip cap:** TimberTex or Ridglass matching-color cap - **Ventilation:** Cobra ridge vent balanced to soffit intake per code Because ADC is a **GAF-certified installer**, we register every HDZ install with GAF within 45 days of completion — which is what makes the Lifetime warranty transferable to the next homeowner (a real resale advantage). Our crews are trained on the LayerLock nail zone, we hand-nail rakes and hips, and we photograph every roof before, during, and after so the warranty registration ships with documented compliance. Typical install timeline for a 25-square DFW home: full tear-off, decking inspection, and HDZ system replacement in **1–2 working days**, weather permitting.