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How to Fix a Window That Won't Close All the Way

How to Fix a Window That Won't Close All the Way

Windows that won't close all the way can be a frustrating problem, compromising your home's security and energy efficiency. Whether it's a minor obstruction or a more serious mechanical issue, here's a step-by-step guide to help you troubleshoot and fix a window that won't close properly.

Step 1: Identify the Type of Window

First, determine the type of window you're dealing with. Common types include:

  • Single-Hung or Double-Hung Windows: These slide up and down.


  • Casement Windows: These open outward with a crank.


  • Sliding Windows: These move horizontally along a track.


  • Awning Windows: These open outward from the bottom.


Step 2: Inspect for Obstructions

Debris or dirt in the window track can prevent the window from closing fully. Clean the tracks thoroughly using a vacuum cleaner and a brush. Pay special attention to corners and hard-to-reach areas where dirt can accumulate.


Step 3: Check the Weatherstripping

Weatherstripping can become worn or dislodged over time, hindering the window's movement. Inspect the weatherstripping around the window and replace any damaged sections. You can purchase weatherstripping at most hardware stores and cut it to size with scissors.


Step 4: Examine the Window Hardware

Loose or damaged hardware can also be a culprit. Tighten any loose screws and check for bent or broken parts:

Replace any broken components as necessary. We carry a variety of replacement parts for most window types.


Step 5: Adjust the Window Alignment

Windows can become misaligned due to settling of the house or repeated use. Here's how to realign different types of windows:

  • Single-Hung or Double-Hung Windows: 
  • Check the sash cords and pulleys. If the sash is not level, you might need to adjust the balances or replace the cords.

  • Casement Windows: 
  • If the window is off-kilter, adjust the hinges. Loosen the screws slightly, realign the window, and then retighten the screws.

  • Sliding Windows:
  • Ensure the window sits properly on the track. If it's not, lift the window out and realign it before placing it back on the track.


    Step 6: Lubricate Moving Parts

    Friction can make it difficult for windows to close fully. Apply a silicone-based lubricant to the tracks, hinges, and any other moving parts. Avoid using oil-based lubricants as they can attract dust and debris, causing more problems in the long run.


    Step 7: Check for Warping

    Wooden windows can warp due to moisture and temperature changes, preventing them from closing properly. If you suspect warping:

    1. Measure the window frame and sash to confirm the warping.
    2. Sand down any high spots or use a plane to create a smoother fit.
    3. For significant warping, consider replacing the window sash or frame.


    Step 8: Consider Professional Help

    If you’ve tried all the above steps and your window still won't close all the way, it might be time to call in a local professional. Window repair specialists have the tools and expertise to address more complex issues.


    Preventative Maintenance

    To avoid future problems, perform regular maintenance on your windows:

    • Clean the tracks and hardware periodically.
    • Inspect and replace weatherstripping as needed.
    • Lubricate moving parts every few months.
    • Address any signs of warping promptly.

    By following these steps, you can keep your windows in good working condition and ensure they close all the way, maintaining the comfort and security of your home. For more information about how to fix a window that won’t close all the way or assistance ordering replacement hardware, Contact The WHD Team! We look forward to helping you.

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