See the difference between the fused shingle layers, the nailing area and the adhesive seal in this short illustrated guide.
Know what holds the layers together
LayerLock mechanically fuses the common bond between the overlapping layers within a shingle. It supports the wider StrikeZone nailing area.
See the nailing area
A clearly marked nailing area helps the installer place fasteners correctly. Nail placement, depth and pattern must still follow the exact product instructions.
Three names to recognize
| Name | Its job |
|---|---|
| LayerLock | Fuses the overlapping layers within a shingle |
| StrikeZone | Identifies the nailing area |
| DuraGrip | Helps seal one course to the next |
The details underneath
1. Alignment guide
2. StrikeZone nailing area
3. DuraGrip adhesive
4. LayerLock technology
5. Smooth microgranule surface
DuraGrip and the smooth microgranule surface work together at the seal. LayerLock shingles can qualify for WindProven when installed with the required accessories.
Ask about installation, too
Which exact shingle is specified?
How will the starter, flashing and ridge details be handled?
Which warranty applies to this complete system?
See GAF’s illustrations in full
LayerLock Technology sell sheet RESTZ114 (PDF)
WindProven requirements explained
Timberline AS II product guide
Explore a complete roofing system
Talk through your roof replacement
Illustrations and product photography: GAF. Manufacturer examples are not Barnes N’ Roofs installations. Reviewed September 19, 2026.