The PROSOCO Stitch-Tie Asymmetric, formerly called CTP Stitch-Tie Asymmetric, features one end with a smaller diameter that makes it ideal for embedding into harder backup materials. The 8-mm or 10-mm helical outer diameter on the other end is designed to engage with softer masonry veneer materials. The result provides an optimum tension capacity for the connection.
Step 1
Drill the pilot holes through both leaves to required depth and diameter.
Step 2
Insert the installation tool into an SDS rotary hammer drill, then place the CTP Stitch-Tie® Asymmetric Wall Tie into the installation tool.
Step 3
Drive the CTP Stitch-Tie® Asymmetric Wall Tie into the internal leaf to the required depth ensuring the tie is fully recessed to the external leaf below the face of the masonry.
Step 4
Repair the surface with matching mortar
The CTP Stitch Tie Asymmetric is used when connecting a soft external substrate to harder internal walls. The CTP Stitch Tie Asymmetric features one end with a smaller diameter (2”-3”) to embed into harder back-up material. The 8-mm or 10-mm helical outer diameter on the other end is designed to engage with softer masonry veneer material. The result provides an optimum tension capacity for the connection. This is important because concrete back-up density and hardness can restrict entry of 8-mm or 10-mm diameter helical ties. A larger pilot hole would usually be required. By concurrently enlarging the veneer pilot hole, a capacity reduction in the veneer portion of the anchorage can occur. CTP recommends a mock-up installation at the site to establish the need for CTP Stitch Tie Asymmetric. At that time, development of an optimum pilot hole size can be established.
