There are locking devices that block the door at the rails . Don't use a stick, they can be defeated easily.
Mechanically blocking the door, either with screws/nails as mentioned above, or with one of those adjustable bars (we have one of those) will help.
Breaking is always a possibility, but keep in mind that doing so makes a lot of noise. Most won't want to do that. Another thing you can do is put one of those laminates/films over the glass to help make it a bit more resistant to shattering.
If I had the option, I'd replace sliding glass doors with solid core wood or steel doors. I value security more than I do having a nice view into the back yard.
Does anyone make a decent lock for sliding glass doors? Too many of them will open if you just wiggle the door back and forth a little, and that's not a good thing!
Thanks for all the comments guys. My doors do have a lock but a bit of imagination would defeat them.
I was wondering the same thingI realize that it is old and simple, but how can a big stick be defeated?
I realize that it is old and simple, but how can a big stick be defeated? no way can someone pull the door hard enough. The door can be lifted (if unlocked) about 3/4" or at most 1", so if you get a stick with a diameter of 1"+ I don't see how this isn't a simple, cheap, effective method? That said, of course breaking the glass is a loud option. I remember watching "how to catch a thief" once and to prevent people from busting out small windows next to a door and reaching through to unlock the door, they used a spray or maybe "painted" something onto the glass. It was really amazing in that the glass COULD NOT be broken. I think he used a crowbar and couldn't break the glass. I don't know if this could work on a whole door or not.
Its easy, you just lift the door out of the lower track with a prybar. Then, you slide it out of the upper track and set it silently to the side. Regardless of what kind of slide block you have, you MUST install set screws in the upper track to prevent them door from moving up high enough to be removed from the lower track.
Best,
Joe
I realize that it is old and simple, but how can a big stick be defeated? no way can someone pull the door hard enough. The door can be lifted (if unlocked) about 3/4" or at most 1", so if you get a stick with a diameter of 1"+ I don't see how this isn't a simple, cheap, effective method? That said, of course breaking the glass is a loud option. I remember watching "how to catch a thief" once and to prevent people from busting out small windows next to a door and reaching through to unlock the door, they used a spray or maybe "painted" something onto the glass. It was really amazing in that the glass COULD NOT be broken. I think he used a crowbar and couldn't break the glass. I don't know if this could work on a whole door or not.
If I had the option, I'd replace sliding glass doors with solid core wood or steel doors. I value security more than I do having a nice view into the back yard.