What is a common spacing practice for shims in glazing installations?

In glazing installations, a common spacing practice for shims is 18 to 24 inches. This range is widely accepted because it provides sufficient support for the glazing units while allowing for proper load distribution and structural integrity. Properly spacing the shims ensures that the weight of the glass is adequately supported and minimizes the risk of stress points that could lead to cracks or failure in the glazing system.

When shims are placed too far apart, it can result in uneven load distribution, which can compromise the installation over time. Conversely, placing them too close together may lead to unnecessary material usage and complicate the installation process. The 18 to 24-inch spacing strikes a balance that adheres to industry standards, allowing for effective support without overcomplicating the application.