What are helical wall ties?
Helical wall ties are work-hardened stainless steel wires that have been cold-rolled into a cruciform shape and then twisted. They are used to anchor the outer wall of a building to its inner structure and are available in different lengths to suit all cavity widths.
How do helical ties work?
The helix-shaped stainless steel tie is driven into a small pilot hole to provide a mechanical connection that grips both the inner and outer layers of a cavity wall structure. As it is driven the tie corkscrews into the bricks, its work-hardened helical fins undercutting the masonry to provide an expansion-free anchorage that will withstand tension and compression loads. The continuous helix provides multiple drip points that prevents the passage of water across the tie.