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LayerLock™ Technology strengthens the bond between <br />layers of your Timberline HDZ ® Shingles. To help your <br />roofer give you the best possible installation. And to <br />help you rest easy when the wind is howling outside. <br />Here’s how it works: <br />The strength added by LayerLock™ Technology allowed <br />GAF to create the StrikeZone™ nailing area — the <br />industry’s widest nail zone — which offered 99.9% nailing <br />accuracy in our test.1 <br />LayerLock™ Technology also powers the industry’s first <br />wind warranty with no maximum wind speed limitation. <br />Timberline HDZ ® Shingles are eligible for the WindProven™ <br />limited wind warranty when installed with the required <br />combination of four qualifying GAF Accessories.2 <br />It’s a shingle <br />that helps your <br />roofer do their <br />best work. <br /> 1 Results based on study conducted by Home Innovation Research Labs, an independent research lab, comparing installation of Timberline HD® Shingles to <br />Timberline HDZ® Shingles on a 16-square roof deck using standard 4-nail nailing pattern under controlled laboratory conditions. Actual results may vary. <br /> 2 15-year WindProven™ limited wind warranty on GAF Shingles with LayerLock™ Technology requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap <br />Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying <br />GAF products. For installations not eligible for the GAF Roofing System Limited Warranty, see the GAF Shingle & Accessory Limited Warranty. <br />TECHNOLOGY <br />LAYERLOCK™ <br />2