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How to Open a Locked Commercial Window: Tips & Tricks

  • michaelfox0
  • Jan 31, 2025
  • 3 min read

Opening a locked commercial window can be a challenge, especially if the key is misplaced or the locking mechanism is jammed. Whether you need to improve ventilation, clean the windows, or access the window for maintenance, there are several methods you can try. Here’s a step-by-step guide on how to open a locked commercial window safely and effectively.

1. Identify the Type of Lock

Before attempting to open the window, it’s crucial to understand the type of lock you’re dealing with. Common types of commercial window locks include:

  • Sliding window locks: Often found on large horizontal sliding windows.

  • Sash locks: Typically used on double-hung windows in older buildings.

  • Casement window locks: Used on windows that open outward with a crank.

  • Pin locks: These locks use a pin mechanism to secure the window.

  • Lever locks: Common in modern commercial buildings.

Knowing the type of lock will help you determine the best method to unlock it.

2. Check for an Alternative Entry Point

If your building has multiple windows of the same type, check if any of them are already unlocked. Sometimes, a different window might provide better access to the locked one. For example, if you have sliding windows, you might be able to lift the locked window out of its track from the outside.

3. Use a Flat Tool for Sliding Windows

For sliding windows, you can use a flat tool like a putty knife or a credit card to unlock the window. Here’s how:

  1. Insert the tool: Slide the tool between the window and the frame, near the latch.

  2. Shimmy the tool: Gently wiggle the tool to disengage the latch from the locked position.

  3. Lift and slide: Once the latch is disengaged, you should be able to lift or slide the window open.

4. Try Lubrication for Jammed Locks

If the window lock is jammed, it might just need some lubrication. Spray a small amount of lubricant into the lock mechanism. Wait a few minutes for the lubricant to penetrate, then try unlocking the window again.

5. Use a Screwdriver for Sash Locks

For double-hung windows with sash locks, a flat-head screwdriver can be useful:

  1. Locate the lock: Find the sash lock at the meeting rail of the window.

  2. Insert the screwdriver: Place the flat-head screwdriver under the lip of the lock.

  3. Apply gentle pressure: Carefully pry the lock open while applying gentle pressure to avoid damaging the window frame.

6. Remove the Window Frame for Casement Windows

If you’re dealing with a casement window and the crank mechanism is locked or broken, you might need to remove the window frame:

  1. Unscrew the hinges: Use a screwdriver to remove the screws holding the hinges.

  2. Remove the window: Carefully lift the window out of the frame.

  3. Access the lock: Once the window is removed, you should have easier access to the locking mechanism to unlock it manually.

If you don’t feel comfortable removing the window frame yourself or have multiple frames that need to be removed, contact a window repair specialist for help removing the window frames.

7. Call a Professional Locksmith

If all else fails and you’re unable to open the locked window, it’s time to call a professional locksmith. They have the tools and expertise to unlock windows without causing damage. This is especially important if you have high-security windows.

Prevention Tips

To avoid dealing with locked windows in the future, consider these preventive measures:

  • Regular maintenance: Lubricate locks and hinges periodically to keep them in good working condition.

  • Key storage: Keep window lock keys in a safe but easily accessible place.

  • Upgrade locks: Consider upgrading to modern window locks that offer easier access and enhanced security.

Conclusion

Opening a locked commercial window can be a straightforward task with the right tools and techniques. By identifying the type of lock and using the appropriate method, you can safely and effectively unlock your window. Remember, if you’re unsure or the lock is severely damaged, consult a professional locksmith to avoid causing further damage. For more information or to schedule a consultation for repair, Contact Us Today! The WRS Team is here to assist you.

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