Another option is a surface 'rail' lock, and if you need some ventilation, have a sash stop screwed onto the frame.
Sash stops and bolts are effective with modern tilt-to-clean units, too.
Sash stops allow the window to be opened slightly for ventilation (or opened fully with a key), but not enough for someone to get in, providing they're fitted at the right height, so they're a good security measure.
Sash stops allow the window to be opened slightly for ventilation (or opened fully with a key), but not enough for someone to get in (providing they're fitted at the right height), so they're a good security measure.
1 SAW notches under the
sash stops (stopping at the jamb) and the exterior casings on both sides of the window.
Safety features, ie., timers on appliances and operable windows with
sash stops, allow residents to safely direct their activity and take personal responsibility for activities of daily living.
Stop intruders coming in through large windows that open wide by fitting secondary locks and fit '
sash stops' on sash windows.
To allow windows to be partially opened for ventilation but without compromising security,
sash stops a reideal.