Our unique Perma Lock Locking System ensures true vertical alignment while pressing the piling to refusal. Our blocks are designed to lock together, therefore ensuring that every block is sturdy and becomes one continuous concrete piling. With this type of threading there is no lateral movement during or after installation due to expansive soils, soil consolidation, sloping sites, ground pressure or roots of trees (in which other competitors’ warranty becomes null and void under these conditions). True vertical alignment and concentric loading offered by Perma Lock resist buckling of the supporting piles which can occur with other systems. Perma Lock is the only piling system specifically designed for the unique soil conditions of Louisiana.