How to Adjust Single Hung Tilt-In Windows

Written by c.l. rease
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The lower sash of a single hung tilt-in window tilts into your home to ease the process of cleaning the window. A gasket seals around the sash when it sits in its closed position. Over time, the sash will fall out of adjustment. This leads to the window not seating correctly or the window not opening and closing properly. Readjusting the tilting sash cures the problem. Improperly adjusting the window can jam the sash in the window frame.

Skill level:

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Things you need

  • Flathead screwdriver

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  1. 1

    Pull the clasps -- located at the top of the tilt-in sash -- toward the centre of the window. Tilt the sash to its lowest position.

  2. 2

    Slide the tip of a flathead screwdriver into the spring tension adjustment screw located inside the window frame, directly above the pin holding the sash to the window frame.

  3. 3

    Turn the spring tension adjustment screw 1/4 turn clockwise to increase or 1/4 turn counterclockwise to decrease the tension on the tilt-in sash. Move the screwdriver to the opposite side of the window. Turn the second spring tension adjustment the same amount as the first screw.

  4. 4

    Close the window. Examine the gap between the sash and the gasket running around the window. Release and tilt the sash to its lowest position. Adjust both spring tension adjustment screws and push the sash closed. Continue adjusting the screws until the sash closes smooth and rests tight to the window gasket without jamming.

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