How To Replace Old Basement Windows With Glass Block

If you're looking for a way to update the look of your basement and make it more energy-efficient, replacing your old windows with glass block is a great option. Glass block windows are durable, easy to clean, and can help to reduce heat loss in the winter and heat gain in the summer.

Here's a step-by-step guide on how to replace old basement windows with glass block:

1. Remove the old windows.

To remove the old windows, start by removing the trim around the window. Then, use a pry bar to carefully remove the window from the frame. Be careful not to damage the frame or the surrounding wall.

2. Prepare the window opening.

Once the old windows are removed, you'll need to prepare the window opening for the new glass block windows. This may involve removing any old insulation or weatherstripping. You'll also need to make sure that the opening is square and level.

3. Install the glass block windows.

To install the glass block windows, start by applying a bead of construction adhesive to the bottom of the opening. Then, carefully place the first row of glass blocks into the opening. Make sure that the blocks are level and aligned. Continue adding rows of glass blocks until the opening is filled.

4. Grout the glass blocks.

Once the glass blocks are installed, you'll need to grout them. To do this, mix a batch of grout according to the manufacturer's instructions. Then, use a grout float to apply the grout to the joints between the blocks. Be sure to press the grout into the joints firmly.

5. Seal the glass blocks.

Once the grout has dried, you'll need to seal the glass blocks. To do this, apply a bead of silicone caulk to the joints between the blocks and the frame. Be sure to smooth the caulk out with your finger.

6. Trim the glass blocks.

Once the caulk has dried, you can trim the glass blocks to fit the opening. To do this, use a glass cutter to score the blocks along the edge of the opening. Then, snap the blocks along the score line. Be careful not to cut yourself when trimming the blocks.

7. Install the trim.

Finally, you'll need to install the trim around the windows. To do this, apply a bead of construction adhesive to the back of the trim. Then, press the trim into place. Be sure to nail or screw the trim into the frame.

Replacing old basement windows with glass block is a relatively easy project that can be completed in a weekend. By following these steps, you can update the look of your basement and make it more energy-efficient.