How to Install Glass Block Windows
Glass block windows are a great alternative to conventional windows, especially in a basement. These block windows provide an aesthetically pleasing look while helping to cut down on your heating and cooling costs.
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Things You'll Need
- Tape measure
- Paper
- Pencil
- Local hardware store/ glass block seller
- Glass block
- Plastic spacers manufactured for use in glass block
- Brackets made to secure horizontal spacer.
- Level
- Caulk gun
- Silicone caulk
- Drill
Instructions
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1
Measure the existing opening for your window(s). While it might seem easier to measure the window from inside, you will get a more accurate measurement if you do so from the outside of the opening. Record your measurements for the height and width of your window opening. This will allow you to know exactly how many blocks you will need to order from the manufacturer.
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2
Contact your local glass block dealer. Many large chain hardware stores do not carry these products in stock however for a small fee they can special order the exact size and style of glass block you need to complete your project. If you do not have a local store that can supply these glass block use the internet to locate a dealer that can ship the blocks to your home. Don't forget to order the plastic spacers to place between the layers of block.
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3
Place a thin layer of silicone caulk in the bottom of the window. If you live in a older home that has settled some you may need to add some pieces of lumber to level the base. Use your level to determine if the block will set level. Gently place a glass block on the silicone caulk. Start in one corner.
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4
Work your way across the bottom layer of block placing a piece of the plastic space between each block. Secure each side of the spacer to the block with silicone caulk. Check each block as you work to make sure that it is level.
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5
Begin working on the second row of glass block by placing a piece of plastic spacer along the entire horizontal length of the first row. Secure the space in place with specialized brackets that slide into the end of the space. These brackets are then drilled into the wall.
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6
Complete the remainder of the project in the same manner as the above mentioned steps. Finish off the project by placing a thick line of silicone caulk around the perimeter of the window.
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Tips & Warnings
If you will be replacing several windows be sure to measure each of them. While they may look the same size often windows in the foundation of a home are slightly different in size.
Arrange for delivery to your home, especially if you will be replacing several conventional windows with glass blocks.
Traditionally the installation of glass block required mortar however advances have made this method of installation much easier and quicker.
Make sure to level each block with a level While it may look level to the eye this can be deceiving. Take the extra time and check each b block.
