Layerlock™ Technology
Get up to a 99.9% nailing accuracy with StrikeZone™, a nailing area so easy to hit that a roofer placed 999 out of 1,000 nails correctly in our test.3 Layerlock™ technology mechanically fuses the common bond between overlapping shingle layers. 

 WindProven™ Limited Wind Warranty2
When installed with the required combination of GAF Accessories,Timberline HDZ® Shingles are eligible for a 15-year limited wind warranty with no maximum wind speed limitation. 

A proprietary reinforcement that gives TAMKO Proline shingles their enhanced wind performance. This unique poly-fabric reinforces the shingle for an added layer of protection and provides an anchor for the nails to embed in, locking them tightly to the deck.

The AnchorLock™ layer technology featured in the new Titan XT® shingles is in the form of a reinforcing strip of polyester fabric on the back of the shingle, attached in the common bond area to provide added anchoring for