Secure Sheds With Screws
Your locked shed seems secure, but a cagey thief can bypass the lock by using a screwdriver to remove hinges and other hardware with exposed screw heads. Foil would-be thieves by using Allen head, Torx head or hex-head cap screws instead of standard Phillips head screws. You can also order tamper-proof security screws that require special removal tools that an opportunistic thief is unlikely to have. You'll also need to buy the special bit or tool. Type “security screws” or “tamperproof screws” into your search engine.
Two Ways to Secure Shed Door Hinges
Shed doors usually swing out, so the hinge pins are accessible from outside; all a thief has to do is pop out the pins and remove the door. To stop this, buy a security hinge with tamper-proof pins and a locking tab at a home center. Or, you can retrofit an existing hinge by removing the center screws on both sides, inserting a finish screw through one side and allowing it to protrude about 1/4 in. Drill out the receiving hole slightly so that when the door is closed, the finish screw head engages the other hinge. That way, even if the hinge pin is removed, the door can't be taken off.
Add Inexpensive Door and Window Alarms
Attach the alarm to the door or window (with a screw or double-sided tape) alongside the magnetic contact strip (they don't have to be touching, but within 1/2 in.). When the door or window opens, breaking magnetic contact, the alarm shrieks (these little units have a piercing alarm). The door alarm has a delay feature, giving you time to set the alarm and leave, then open the door and deactivate the unit when you come home, without setting it off. The window unit has an on/off switch. The alarms will work on any door or window, and the batteries last two to three years.