There are a few methods you can use to secure a stained glass window. One is to install a storm window or door specifically designed for stained glass. These typically have either an acrylic or plastic panel that rests in front of the stained glass and helps protect it from breaking if the window is hit by something like a ball. Another option is to install shatter-resistant film on the windows. This film is made of a tough plastic and is designed to hold the glass together if it does break. It's important to note that neither of these options will completely prevent your window from breaking, but they will help reduce the chances of it happening.

There are a few ways to secure a stained glass window. One way is to use lead came, which is the traditional way to hold stained glass in place. Another option is to use silicone or urethane caulk. This method is newer, and some people feel that it doesn't look as good as lead came, but it does provide a very strong seal. Finally, you can also use metal wire or strips of metal (like aluminum) to secure the window in place.