To lock it from the inside is much easier.
Can sliding barn doors lock.
How to use a schlage barn door bolt lock.
Consider the type of barn door.
Locking a sliding barn door from the outside is definitely trickier but there are a few options available.
For double barn doors a sliding barn door latch isn t too difficult to find or install.
There are many kinds of locks that you can install on your door.
Adding a lock to a sliding barn door is a step toward making your barn much more secure.
The lock mounts to a door jamb to keep out prying eyes and keep barn doors shut.
However the simplest as well as most cost effective method of locking your barn doors is using a hasp lock.
But in some situations your only option might be to do it from the outside.
Installation requires a little more work as you need to carve out a portion of the door to fit the hardware.
Therefore this system is designed for use with solid doors rather than a hollow core.
Get a hasp lock and fix the hook to the door frame with screws.