How to Install Block Glass Windows

October 11, 2010

Block glass windows are an ideal choice if you need to add some natural light to dim space but don't necessarily need ventilation. Also, distorted block glass windows are perfect for adding an element of privacy. Do it yourself and you could save hundreds of dollars. Here's how.

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Block Glass Windows: What You'll Need

Here is a quick list of the items you'll need to install block glass windows:

  • Glass blocks
  • A utility knife
  • Silicone sealer
  • Plastic tracking and spacers
  • A putty knife
  • Caulking, same shade as tracking
  • A drill for the pilot holes
  • A tape measure
  • A pencil
  • Wood screws

How to Install Block Glass Windows in Four Steps

  1. Measure the window opening. Mark and cut the plastic tracking to fit all four sides.
  2. Place the tracking in the window opening, cutout section up. Mark pilot holes with a pencil. Drill pilot holes and attach the tracking with screws.
  3. Position glass window block in bottom corner. Place a trimmed spacer vertically along the side. Position the next block along the bottom, and make sure the channel fits tightly. Continue this process. Top the blocks with a horizontal spacer, and follow the same procedure until reaching the top of the window frame. Apply the silicone to the piece of tracking that was set aside, and securely install the final piece.
  4. Seal all of the blocks. Apply silicone sealer to horizontal seams first. While applying the silicone vertically, skip the horizontal lines. Repeat this process on both sides of the window. Finish by smoothing the material with a plastic putty knife. Seal the perimeter of the tracking and the interior and exterior with latex caulk.

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