The Tremco/ES Products Twin Loc-Nail is designed to secure asphalt-coated base sheets and insulation boards to new and existing cement wood fiber decking (Tectum) and poured gypsum decking.  This product may also be used as a roof fastener for lightweight insulating concrete substrates.

Composition:

The Tremco/ES Products Twin Loc-Nail is a single piece, pre-assembled fastening unit consisting of a tube, disc and locking staple. 

The tube is formed from galvanized coated steel and is available in four different lengths. The discs are formed from Galvalume coated steel and are securely clamped to the tube.  Lastly, the locking staple is formed from high tensile steel wire that is coated to prevent corrosion.  The locking staple is preloaded into the tube and is set when the Twin Loc-Nail is driven.