The highest quality shingle manufactured by GAF is the Timberline UHDZ (Ultra High Definition Z-feature) architectural shingle. Positioned at the very top of GAF's product hierarchy, UHDZ incorporates proprietary UltraMat high-performance fiberglass core technology that achieves an official UL 2218 Class 4 impact resistance rating, making it exceptionally resistant to severe hail and storm strikes. Furthermore, its ultra-thick dimensional profile, deep dual shadow lines, and superior algae defense make it an elite luxury choice.
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