Why are wedge anchors the preferred choice for curtain wall installation?
From constructing high-rises to installing curtain walls—whether glass or stone—these facades endow a city with a unique charm. As the critical small components connecting the curtain wall to the structural wall—specifically, wedge anchor (commonly known as through bolts)—the selection of the appropriate anchor is of paramount importance. Why, then, have wedge anchors (also referred to as Ankur Bolts) emerged as the preferred solution in the field of curtain wall installation?
Wedge Anchors: Ready for Immediate Use—No Waiting Required
During installation, wedge anchors are subjected to applied torque, causing the outer sleeve to fully expand. This expansion creates a tight, flush fit against the inner walls of the concrete or dense stone substrate, thereby generating immense frictional force.
Unlike traditional chemical anchors, wedge anchors do not rely on chemical agents for curing. This means they can bear loads immediately after installation, significantly shortening the overall construction cycle. For curtain wall projects where efficient project delivery is a priority, this “install-and-use” capability offers exceptional commercial value.
Anchor Bolts That Defy the Elements—Especially Stainless Steel
Curtain walls are mounted on the exterior of buildings, constantly exposed to scorching sun and heavy rain; if the anchor bolts were to rust, the consequences could be extremely dangerous. Wedge anchors are available in various materials—including carbon steel wedge anchor and stainless steel wedge anchor—with the stainless steel variant standing out for its exceptional rust-resistance capabilities.
Whether your construction site is located in the humid South or in a coastal region prone to salt spray, as long as you select the appropriate grade of stainless steel, these anchors will remain firmly and securely in place—ensuring that rust-induced loosening never creates a safety hazard for the curtain wall.
High Installation Tolerance Significantly Reduces Construction Costs
In actual construction environments, achieving perfect control over the depth and cleanliness of drilled holes is often a challenging task. Wedge anchors, however, impose relatively low requirements regarding the depth and cleanliness of concrete cavities, thereby offering a high degree of installation tolerance. Furthermore, they feature a reliable post-expansion mechanism; by simply selecting the appropriate embedment depth—based on the thickness of the fixture plate—maximum tensile strength can be effectively achieved.
This simple and rapid installation method not only reduces the need for highly specialized technical skills among construction personnel but also effectively minimizes the costs associated with rework caused by installation errors, making it a highly cost-effective anchoring solution.
Wedge Anchors Are Widely Used in a Variety of Heavy-Duty Applications
Building Facades: Securing the substructures for glass and stone curtain walls
Steel Structure Engineering: Connecting steel beams and cantilever brackets
Infrastructure: Anchoring railings, escalators, cable trays, and windows/doors
Our entire range of wedge anchors holds ETA certification and fully complies with EU construction regulations, making them a reliable choice for your export projects and high-end infrastructure developments
