Securing Windows

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Handywoman Lisa van Dyke offers a few tips for add securing to older windows.
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Figure A
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Figure B
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Figure C
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Figure D
Figure A--As a window ages, gaps form that make it easy to slide in a putty knife or other tool and open a typical window latch.

Figure B--Mount a ventilating lock about four inches above the center of the window, and mount the strike plate on the meeting rail so that it contacts the lock when the window is raised.

Figure C--The lock has two positions, locked and open. By sliding the lock forward, the window is prevented from opening fully. Slide it back and the window is free to open.

Figure D--Wedge locks operate similarly to ventilating locks and are another way to restrict the window from opening fully.

While these devices work well for older wooden-frame windows, do not use ventilating locks or other items that require drilling holes on vinyl windows. Drilling holes in the frame of a vinyl window can damage the structural integrity of the window. Consult the manufacturer of the window for security tips.

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Figure E
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Figure F
Figure E--Here's a quick way to make a sliding door more secure. Just cut a dowel or a board to fit flat in the window track. This will prevent the sash from sliding open even if the lock is jimmied. Do not use dowels for vertical windows.

Figure F--A little privacy can also make windows and sliding-glass doors more secure. Keep shades or curtains on windows closed to prevent potential burglars from seeing inside.

* Note: Whatever security measures you use, make sure all family members know how to open the windows in case of an emergency.