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Replace a Window Sash Cord

mediumHome Repair2-3 hours10 steps

Safety Warnings

  • Warning: Sash weights are heavy and can fall unexpectedly; keep feet and hands clear of the weight pocket.
  • Warning: Glass panes are fragile; handle sashes carefully to avoid breakage.

Tools Needed

Phillips #2 Screwdriver — Phillips #2
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Needle-nose Pliers — Standard
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Utility Knife — Sharp blade
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Materials

Sash Cord — Waxed cotton or nylon, matching original diameter(As needed per window)
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Sash Weights — Cast iron, matching original weight(As needed)
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Steps

1
Remove the interior window trim or stop molding to expose the sash pocket and pulley system.
Tip: Carefully pry the molding to avoid splitting the wood.
2
Remove the window sash from the frame by carefully lifting it out of the tracks.
Tip: Ensure the sash is supported to prevent the glass from cracking.
3
Cut the old, broken sash cord using a utility knife and remove the remaining fragments from the pulley.
Tip: Check the pulley for wear or debris before proceeding.
4
Retrieve the sash weight from the bottom of the weight pocket using pliers or a hook.
Tip: Be mindful of the weight's heaviness to prevent it from dropping.
5
Thread the new sash cord through the pulley at the top of the window frame.
Tip: Ensure the cord is centered on the pulley wheel.
6
Attach one end of the cord to the sash weight and securely knot it.
Tip: Use a double knot to ensure the weight does not slip.
7
Run the other end of the cord through the hole in the window sash and tie it securely.
Tip: Tighten the knot firmly against the wood of the sash.
8
Reinstall the window sash into the frame and ensure it slides smoothly.
Tip: Test the balance of the window by sliding it up and down several times.
9
Replace the interior trim and stop molding to seal the window pocket.
Tip: Ensure the molding is flush against the wall.
10
Test the operation of the window to ensure it stays open and closes without excessive force.
Tip: If the window drops, adjust the cord tension or verify the weight.

Pro Tips

  • Ensure the cord is waxed to reduce friction as it passes through the pulley.
  • Verify that the weight is the correct size for the specific sash to maintain balance.

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Sources

Synthesized from 5 verified sources:

Gutenberg: Dwelling ConstructionView →
Gutenberg: Practical Hints to BuildersView →
Gutenberg: Electricity for the 4-H ScientistView →
Gutenberg: Economical Farmhouse PlansView →
Gutenberg: Electrical GuideView →