How to Replace Windows With Pocket Windows
Installing new windows in a home can increase the home's value and decrease the home's energy costs. Replacement windows that are designed to fit into existing window openings are often referred to as pocket windows. These windows are installed within the existing window jamb (or buck frame) and will typically result in a slightly smaller glass area. The key to easy installation is proper measuring. Does this Spark an idea?
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Things You'll Need
- Measuring tape
- Utility knife
- Pry bar
- Screwdriver
- Caulk gun
- Caulk
- Insulation
Instructions
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Measure the existing windows. Use a tape measure to take a measurement of the existing window width between the jambs. You may need to remove some of the window trim to get an accurate measurement. Measure at the bottom, center and top of the window. Use the smallest measurement for sizing the replacement windows. Measure the height of the window in the same manner.
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2
Remove the existing window by first removing the window sashes to reduce the weight of the unit. Cut any caulk that is securing the window to the interior or exterior casing. Remove all jamb liners with a flat bar (these will be vinyl or aluminum liners that run up the sides of the window frame and hold the sashes in place). For original window frames, remove any wood stops that are on the frame.
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3
Remove any loose pieces of wood from the frame. Scrap any chipped or bubbling paint. Fill any holes or cracks with wood putty. Sand the jambs smooth.
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4
Fill any open areas surrounding the jamb (or the old block and tackle weight areas in the case of some original windows) with spray foam insulation or pieces of fiberglass insulation.
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5
Install the pocket window from the inside of the opening, pushing it flush against the exterior casing or stops. Use shims to square the window and secure it in place with the screws provided.
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6
Caulk around the window to secure and seal the window to the outside casing. Replace or install new interior stop and casing and caulk to the window.
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Tips & Warnings
Because of the awkward size of the windows, this project is best performed with a helper.
If using expandable foam insulation, be sure to use a product rated for doors and windows so that it does not expand too much and damage the existing frame or jambs.
