Is there something I can do to make my glass doors at the back of the house visibly safer? At the moment someone could just put their hand through the glass to reach the handle and walk in.
You'd have to get a new double glazed unit with laminated glass fitted, or fit it yourself. The price is relative: depends what price you put on security. At the end of the day if a burglar wants to get in he will.
Double glazed units are not armour-plated. Glass will always break when hit with something like a hammer despite whatever lies might have been told to you when you bought the windows originally.
One thing you might want to consider is a double glazed unit made up with an inside pane of 6mm Toughened Safety glass and an outside pane of 10.8mm thick Laminated Safety glass. The 10.8 Laminated glass will still break but is a lot harder to smash through then what glass you've already got and will make a lot of noise. This unit make-up will also reduce a lot of outside noise.
The downside is the weigh it will add to the door. You'll need to make sure that it is toe-and-heeled by someone with a bit of common sense.
As freddymercurystwin as already said, if a burglar is determined enough to get in then he will.
You're probably on the right tracks by fitting a visible alarms and perhaps camera's? Prevention is always better than cure.
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