How to Install a Vertical Tempered Window

Remove the window pane from the vertical window if possible. All windows are a little different. However, you can usually remove a window pane by sliding the locks at the top of the lower window toward the center. Lean the tempered window pane toward you as you are holding the locks. It will fold out. Slide the window up and out of the frame. This makes the window lighter and easier to handle.

Vacuum the window opening to remove any debris.

Lift the window up into the opening with the help of an assistant.

Adjust the window to make sure it is level. Use a spirit level to double check.

Check that each of the windows edges, or jambs, is flush against the wall by holding a straightedge flat against both surfaces. Adjust the window if necessary.

Drill pilot holes around the inside of each window through the existing holes in the window. Make each hole as deep as the screws you are using. Use the appropriate bit for the wall type. For example, use a masonry bit for concrete walls.

Screw long anchor screws into each of the pilot holes. Use appropriate screws for the job, such as concrete screws in concrete.

Work backer rod into any large gaps around the inside of the window using your fingers. Cut the backer rod to fit with a utility knife.

Apply painter's tape over the inside cracks around the window to prevent any sealant from leaking in.

Inject expanding foam sealant into the cracks around the edge of the window on the exterior. Layer the sealant so the foam is right at the back of each crack. Stop applying the sealant just before you reach the outside edge of the crack. It will expand and fill the remaining space. Cut off any excess sealant with a razor blade after it dries.

Apply painter's tape around the outside edge of the window to keep caulk off of it.

Load a caulking gun with window and door caulk and apply the caulk around the outside edge of the window. Smooth the caulk with a wet finger to get an even finish.