According to a study published by the American Academy of Paediatrics, 5000 children fell from the windows each year between 1990 and 2008. You can avoid this happening to your child by taking some precautions with your windows. Some of the common windows that need childproofing are: hung doors, sliding windows and casement windows. Some of the methods for child proofing are specific to the type of window you have; other methods can be applied in general.
This is a type of window stop that can be used with hung and sliding windows. The window wedge wedges the window shut, preventing your child from climbing or falling through. You can install them easily with no special tools and they are made of durable plastic material. If you need to leave your window open, allow for no more than four inches in width.
The charley bar might be old fashioned, but it still works. In a vertical position the window moves freely; horizontally it keeps the window shut. Charley bars are ideal for sliding windows and, like the window wedge, are easy to install.
Childproofing Crank Windows
The handle on crank windows can be detached. You can simply unscrew the crank handle or just pull it right off (without damaging it). If you need to open the window again, simply re-attach the handle.