Things You'll Need:
- Tape Measure
- Old Window
- Elastomeric Caulk
- 2" Screws
- Drill with Screwdriver Bit
- Shims
- Level
- Spray Foam Insulation
- Primer & Paint or Stain & Finish
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Step 1
Measure the rough opening for your replacement window. Measure your antique window and ensure it will fit within the rough opening.
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Step 2
Apply two continuous beads of elastomeric caulk to the inside of the rough opening. This will help seal your window and serve as a glue to hold it in place.
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Step 3
Set the bottom of the antique window in the rough opening first. Slowly tip the top into place.
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Step 4
Install two-inch screws along the inside of the window frame. These screws must be installed loosely so that it does not bow the frame. Leave enough room between the screws and the glass so that the window still functions.
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Step 5
Adjust the window by inserting shims between the window frame and the rough opening. Using a level, check the window for level and plumb. Once the window is in the correct position, secure it by installing screws that will go through the window frame and shims into the framing.
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Step 6
Fill any gaps under 1/4 inch with elastomeric caulk and any gaps over 1/4 inch with spray foam insulation designed for windows. This will ensure a weather-tight seal.
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Step 7
Prime and paint or stain and finish your newly installed window. Chose a color that will match your existing woodwork.
