How to Replace Windows in Older Home
Replacement windows will provide better energy efficiency in older homes. They will cut down on drafts and help save money on home heating costs. Windows should be replaced if the glazing is falling out, lead paint is present or if the sash is coming apart. Does this Spark an idea?
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Things You'll Need
- Screwdriver or drill
- Hammer
- Utility knife
- Putty knife
- Pry bar
- Pliers
- Level
- Low-expansion foam
- Nails
- Silicone caulk
Instructions
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Understand that replacement windows are designed to fit into your home's existing window openings. They are double-hung sash units with thin frames, which will give you energy-efficient windows without having to rip out existing siding or trim.
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Choose an energy efficient window, which can be custom ordered in any color to match the exterior of your home.
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Remove the storm windows from inside the house. Unscrew the storm window frames from outside the house. Gently tap out the storm frame, removing it completely.
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Cut the caulk and paint between the window casing and moulding, which is called a sash stop.
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Work at the sash stops with a putty knife until they are loose enough to wedge in a pry bar. Carefully remove the sash stops and safe to reuse later.
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Remove the lower sash, upper sash and window crack. Take the parting strip off the top of the rough opening.
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Test-fit the new window. If it fits well into the rough opening, make sure the windowsill is level.
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Apply silicone sealant to the bottom corners of the opening with a caulking gun. Tape aluminum weatherstripping along the bottom.
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Add silicone sealant to the outside stop, where the new window frame will be placed. Line sealant along the edge of the window ledge and the end corners of the windowsill.
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Set the window in place, bottom first. Make sure it is square; add shims if necessary. Run screws through the pre-drilled holes along the sides of the window, through the shims and into the jamb.
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Score the shims with a utility knife, breaking off the extra. Use low expansion foam to fill the gap between the frame and the window opening. Replace the shims, removed earlier, with nails.
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Press foam backing rod into place to make the window watertight. Apply silicone caulk to the space; smooth it with your finger.
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Tips & Warnings
Wear eye protection with using a nail gun, drill or any other piece of power equipment.
Have someone help you lift the windows in and out of place.
