How to Replace a Sliding Basement Egress Window

  • 4-8 hours
  • Intermediate
  • 150-250
What You'll Need
Replacement Egress Window

If you need to replace the basement egress window, you can do this by simply replacing it with a similar window. Basement egress windows are designed to allow someone to enter or leave a basement, so the installation needs to be good. You should also bear in mind that basement egress window compartments are prime targets by thieves, so you need to make sure that the window is firmly installed and correctly placed. In order get the size of the window correct, you will need to measure this carefully. Changing the basement egress window is not too difficult, and you should be able to manage it using a few home improvement tools.

Step 1 - Remove the Old Window

The first step is to remove the old window that you have in position. If you have a floor-to-ceiling window, this will not be a very complicated process. Begin by removing anything loose from around the window and then unscrew the floor support. You should be able to pull this out and take it away. You should then unscrew the top part of the window. Have a friend hold the first panel of the window in place while you remove the sides of the frame. Push the sliding window out, and then slide the fixed window out of position until you can remove that too.

Step 2 - Remove a Built-in Window

If you have a window which is built into the wall, then you will have to use a slightly different method. Unscrew the frame from the window sill, and then gently pry it out. You should be able to tap the window frame out of place using the hammer or a mallet. If you wish to, you can also remove the caulk by prying it out gently.

Step 3 - Fit the New Window

Place the window frame up into position and then tap it firmly into place. You may need to tap the frame into place using a mallet. Do this very gently and then slide the moving part of the frame in. Screw the window frame into the surrounding brickwork using your screwdriver and then cover it with a layer of caulking. This should keep it smooth and perfect. Take the glass and position the first panel of glass, which will be fixed, into position. Tighten the frame around the glass.

Step 4 - Adding the Slider

Once you have installed the fixed glass, take your sliding pane, and push it into position in the window. If you are worried about security, make sure that you install the window so that the pane slides inside the fixed pane. You can then add security measures such as a locking bar. Add the accessories, such as the handle, and then screw the rollers onto the bottom part of the glass. These rollers should be aligned with a stopping piece on the inside of the frame. Slide the window back and forth several times to ensure that the window moves freely.