3 Best Locking Mechanisms For Double-Hung Windows

Double-hung windows are one of the most popular types of replacement windows due to the classic style and ease of use. The window style features movable upper and lower sashes that offer versatile ventilation. The sashes also tilt inwards for easy cleaning from inside your home.

When choosing a window replacement, the style, frame material, and glass insulation are all important characteristics. Choosing the best locking mechanisms is also an important step towards both the use of your window and the security of your home.

Here are a few of the best locking mechanisms available for double-hung windows.

Locking Pin

The gap between the overlapping upper and lower sash is the fundamental security weakness of a double-hung window. A standard sash lock helps narrow the gap between the sashes but is easy for an intruder to pry from the outside. So the best locks are ones that actually attach the two sashes together

A locking pin is one of these attaching mechanisms. A hole is drilled through the lower sash frame and into the background upper sash frame. Metal pieces are place over each hole for appearance's sake and to make it easier for you to see where the pin needs to go. The metal pin can attach to your window frame on a chain. To lock the window, you stick the pin through the front hole until it enters the rear hole.

Key Turnbuckle

A key turnbuckle looks similar to a normal sash lock with a keyhole added. But while the sash lock's turning mechanism is easy to trigger from outside with a long thin object, the turnbuckle is trickier to open. First, you need to use a key to loosen the connection between the sashes. But you also need to press in on the lock's body to get the lock to fully release. That type of pressure is hard to exert from outside the house.

The downside of the key turnbuckle is that you need to not lose the key. You could attach it to the window frame similar to a pin lock. An added benefit of key turnbuckle locks is that even when the key is turned, the windows are difficult for children to open and thus provide a different kind of safety protection.

Hinged Wedge

A hinged wedge lock differs in that the lock sits in the vertical track of the window rather than on one or both of the sashes. The lock has a thick metal wedge that swings out. When the wedge is in place, your sashes can only move as high or as low as that wedge as it blocks the track. If you want to fully open the windows, you can simply swing the wedge out of the track.

The hinged wedge is one of the easiest locks to use and might prove especially helpful for those with hand dexterity issues that would make a turnbuckle lock difficult to manage.


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