How to Install Replacement Windows in Garage
When you plan to replace the windows in your home yourself, consider practicing on the garage. Garage windows tend to be smaller than house windows, so they're less expensive and easier to install. They also install in the same fashion as other prehung windows in your home. Consult with your window dealer to determine the style of window best for your garage, such as implementing double-hung, single-hung or casement windows. Does this Spark an idea?
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Things You'll Need
- Tape measure
- Pry bar
- Hammer
- Replacement windows
- Carpenter's level
- Wooden shims
- Screw gun
- Galvanized screws, 2 1/2-inch
- Fiberglass insulation
- Trim-nail gun
- Caulk and caulk gun
Instructions
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1
Measure the window opening (with the old window still in place) vertically and horizontally, finding the smallest span in each direction. Repeat for each window. Order your replacement window units based on those measurements. The supplier should take ¼ inch off each side to allow for squaring. (Note: Don't remove the old windows until the new ones arrive and you're ready to put them in.)
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2
Remove the first existing window by prying off the perimeter of trim that's around it, on the inside edge of the opening, using a hammer and prybar. Don't break the trim. Set it aside. Pull the window sashes into the room, so the opening is unobstructed.
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3
Set the replacement window unit in the opening, putting the bottom in first and then pushing in the top. Push it until it rests against the border of wood trim around the exterior. Push shims into the sides and back of the window, while setting a level against the side, until it's level.
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4
Drive wood screws out through the screw holes on the sides, into the frame.
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5
Push fiberglass insulation into the spaces around the edge of the window unit, sealing it off.
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6
Reinstall the trim around the window unit to hide the space, using a trim-nail gun. Caulk the edges of the trim. Repeat for each window.
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