Awning types of windows: are difficult to secure. The removal of the inside operator handle adds some security. However, keep the handle handy in the event of an emergency. These types of windows should be tightly closed to enhance security. Also, the newer awning windows have a locking lug that is activated if the window crank is turned three-quarters of a turn after the window is closed.
Remember windows left open while you are away or at night are open invitations to a burglar. Do not help the thief steal your property.
Casement windows: provide good security. Keyed locks are also available for this type of window.
Double hung windows: can be secured by drilling a hole at a slight downward angle through the first sash but not the second sash. The window can then be pinned to prevent opening. However, there are several commercial key type locks which can be installed and these locks provide a greater degree of security. Also, a simple wooden dowel can be used to prevent the opening of the bottom window.
Remember to master key all keyed locks and to train children in the use of locks.
Jalousie windows: are a very high security risk and should be replaced if at all possible. They can be secured by installing metal grating on the inside of the window area with a quick release feature in the event of fire. At a comparable cost to installing grating, the windows can be replaced with another, which offers better security.
Sliding glass windows: can be secured in the same manner as a sliding glass doors. Pins through the frame, screws in the track or keyed locks can all be used. The recommendations made for securing sliding glass doors on the handout titled sliding glass doors also apply to sliding glass windows.