Interior french doors with bore holes.
How to lock interior french door.
Even if these are tight enough.
Fancy way is to get a latch for like a sliding door and doing some router work on either door.
For rooms you would like to be able to lock or just prefer to have a working knob or lever that latches you will want to purchase french doors that are already drilled with a cross bore hole on one side and a latch bore on the other.
How to install a french door inactive panel lock.
Add one side half deadbolts to the top and bottom of each door.
Out of all the locking options to secure a french door a single sided deadbolt is the best option.
Thats the down and dirty way.
Because french doors have no center frame or support they are very weak in the center.
To do this we.
However a deadbolt that locks both doors together and single sided deadbolts in the top and bottom of both doors are a good combination for securing both doors.
Install a commercial grade double sided deadbolt into the active side of the door or alternatively install a double side high security deadbolt into the active side of the french door.
Score the outline of the lock with a utility knife.
Position a flush mount mortise lock face down on the edge of the inactive panel.
Locking both the top and bottom of the doors will significantly reduce the weak point in the middle.
To lock it depending on how secure you want it to be a series of 4 l brackets on the door and frame so that you can drop a bar across all 4 and the doors cant move.
Let s say the cross bore hole is on the right handed door.
This provides a guide and prevents chipping.