Back doors are a convenient way to reach your garden or your driveway without having to use the front door every time. Depending on where your composite back door is installed, you might use it more or less frequently. Unfortunately, for would-be burglars, they are a good way to break into your home (much like windows or other glazing elements).
Luckily, an exterior metal shell provides excellent burglary protection to counteract this.
The metal shell is important since it's highly resistant to force. Compared to a uPVC door, a composite back door can withstand attacks from a wide range of tools such as saws, hammers, or drills. In addition, the metal makes the door more resistant to warping, making it significantly more challenging to take the door off the hinges while it's closed.
Naturally, a metal shell doesn't guarantee complete security from burglars. You also need a range of additional security options (such as multi-point locking mechanisms or high-security glass) to ensure absolute safety. However, the material alone can scare off some would-be intruders, as they may conclude it's just not worth the risk. Even experienced burglars recognise that breaking through a thick sheet of metal takes time, which increases the chances of being discovered.