GAF’s new series of Timberline shingles, Timberline HDZ, incorporates the manufacturer’s Layer-Lock technology to mechanically fuse the shingles’ common bonds. The shingles create a dual-phase, shingle-to-shingle seal when used with GAF’s DuraGrip sealant, as well as an asphalt-to-asphalt monolithic bond. In addition, the new StrikeZone nailing area is up to 600% larger than the nailing area of Timberline HD shingles, providing better nailing accuracy and faster nail fastening during installation, according to the manufacturer. Contact a local distributor for pricing.

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